After leveling up for the first time, the player can access Masteries, skill tree-based upgrade systems where skill points unlocked upon leveling up can be used to access and boost different skills. Mastery abilities expend energy, which is replenished over time when skills are not in use or by using energy drinks. There are eight available Masteries to choose from (Defence, Warfare, Hunting, Rogue, Earth, Storm, Nature and Spirit). Players can access two Masteries at any one time, mixing skills from both trees. The combination of different Masteries create different character classes: for instance, combining Nature and Earth Masteries grants players the "Summoner" class, while Defense and Warfare Masteries create the "Conqueror". There are 36 possible Classes, which include pure disciplines within one Mastery and hybrids between different Masteries. After a certain point in the game, the player has access to Mystics, NPCs which can reallocate skill points for a fee.
Multiple expansion packs detail further adventures undertaken by the player character. In Immortal Throne, the player descends into the Underworld to confront the source of an outbreak of monster attacks. In Ragnarök, the player travels to the Norse realms, allying with the inhabitants of Asgard against an invasion by the Jotunn and the schemes of the treacherous Loki. In Atlantis, the player is called by Poseidon to help against attacks coming from the corrupted city of Atlantis. In Eternal Embers, the player travels to China and must deal with the ten sun spirits, who seek to avert their prophesied destruction and begin attacking mortals.
According to designer Ben Schneider, the basic story was built around the recurring motif in multiple mythologies where a younger generation of deities defeat older primal beings, with the main premise being that victory being overturned. They stayed within their mythological subject matter rather than straying into historical events: this was due to an incident during the release of Age of Empires where the developers needed to cut a scenario showing Korean people coming under attack from invading Japanese due to potential political and popular backlash in both countries. The game's story and script were written by Randall Wallace, a screenwriter who had written recent successful films Braveheart and Pearl Harbor. Titan Quest was his first time writing for a video game. Together with Iron Lore staff, Wallace created a story where humans and the Olympians faced both the Titans and the mythical beasts allied with them that had retreated to the forgotten parts of the world. According to Wallace, Iron Lore wanted story to be a priority in contrast to most other video games, with the player experience focusing on growing their character and learning the world's lore from NPCs. Speaking about his experience writing for the game compared to his work on films, he needed to work within more rigid guidelines and the need to make the story fit in with the gameplay and content. This meant that some scenarios needed to be cut either due to budget limitations or some sequences working so well that they were extended. A major change from his writing for films was that it was the side characters rather than the main character that drove the story forward, so he needed to make them entertaining and important to furthering the plot. The team wanted a world with a scope beyond the main story, with material covering all of its locations. They also included NPC storytellers that would relate local legends and myths to the player in a similar way to storytellers of the time. Later, lead gameplay designer Arthur Bruno faulted the presentation as unappealing compared to the version of Greek mythology portrayed by God of War series, saying that the original atmosphere "was seriously lacking a sense of dread and mystery".
Enemy creatures were taken from the various mythologies the team drew from, and their designs inspired by the stop-motion work of Ray Harryhausen. Sheidow valued the chance of working with mystical creatures, as his previous work had been limited to stock fantasy monsters from the Dungeons & Dragons universe. According to him, the process started when the chosen enemy monsters were given initial designs by lead concept artist Rich Sullivan. Each design was reviewed, and the most suitable was chosen. Creature designs needed to incorporate design choices from the game, such as the monsters' environments and individual fighting styles. They also needed to consider how much detail to put into character models depending on their relative position to the camera at any given time. When it reached the modelling stage, the monster designs were further refined to work within the restrictions of the game, then it was sent to the art time again for final adjustments and mapping of unique animations. The particle effects were handled by Travis Doggett: one of the more prominent pieces of his work were the mastery skills, which had particular themes related to their abilities. According to animator Brian Labore, model animation proved a taxing task, as there were over eighty different monsters which ranged from typical mythical beings to more exotic and unique enemies from each region. The player character also had "hundreds" of animations to incorporate.
The game used a specially developed proprietary engine developed by Iron Lore staff. This was done as, when development started, no third-party engines existed that could support the team's vision for the game: in Sullivan's words, there were "plenty of technology solutions for someone creating a shooter, but not as much for a role-playing game". One of the key parts of the new engine was an environmental creation tool dubbed "the editor" by staff. This tool combined a tile-based horizontal plain with a height-based map, and allowed for subtle adjustments to environments and terrain with easy-to-use developer tools. Level and plain boundaries were set using cliffs and plateaus within the environment. Objects such as chests and enemies could be then "dropped" into environments using a point-and-click system, some of which could be directly integrated using special "tile" elements which stitched into the wider environment for objects such as bridges and crags. All of this necessitated a large amount of research on multiple subjects, including the flora of Egypt and the appearance of Ancient Greek roads and paths. This development tool was the version released with the retail version so players could create and share their own levels. Level and map creation was handled by a three-person team, with each one needing to agree upon a specific layout and design before it went into full production. While early builds used a high amount of detail along level boundaries, the team switched to simple boundary designs as they "read better" for players and allowed better technical performance. The challenge the content creation team set themselves was creating these areas while making boundaries seem natural. This combination of height and grid-based navigation and environments had not been done when the system was being designed in 2002: most of the map was shaped using the height map, while specialist features and horizontal navigation used the grid. In a preview about the game, the developers said the game was built around "database driven modular proxies", a system where different elements within environments were seamlessly interacted and could interact freely. The artificial intelligence (AI) was designed so individual units would behave differently depending on situation and combat ability. The pathfinding for AI units such as NPCs and enemy units was handled using the PathEngine, a licensed middleware engine dedicated to this task. Titan Quest was one of the first major Western titles to use PathEngine.
The music was challenging due to drawing from multiple cultures, then being brought together into a cohesive score while keeping each region distinct from the other. To get the right feeling, the team did research into the historical musical instruments used in each of the game's regions. Rather than a linear progression of looping musical tracks, the norm for most games at the time, the score was broken up into stingers that were brought into the environment when needed. This cuing of themed musical pieces was coupled with a second system tied to environmental progression: musical pieces were arranged in the playlist, then could be cued in depending on the circumstances and environment on-screen. For vocal tracks, the lyrics were written in Ancient Greek: the main vocal piece, "When Gods Fall", was infused into the other vocal tracks and acted as a "cornerstone" for the score. The vocals were provided by Taunia Soderquist.
Evans-Thirlwell, Edwin (August 11, 2023). "Titan Quest 2 announced with a "hand-crafted" open world". Rock, Paper, Shotgun. Retrieved September 3, 2023. https://www.rockpapershotgun.com/titan-quest-2-announced-with-a-hand-crafted-open-world
"Titan Quest Manual" (PDF). Steam. 2006. Archived (PDF) from the original on July 1, 2015. Retrieved June 2, 2016. http://cdn.akamai.steamstatic.com/steam/apps/4540/manuals/TQManual_US.pdf
Aihoshi, Richard (September 23, 2005). "Titan Quest Interview - Part 1". IGN. Archived from the original on May 23, 2016. Retrieved June 2, 2016. http://uk.ign.com/articles/2005/09/23/titan-quest-interview-part-1
Craddock, David (April 30, 2006). "Titan Quest Interview". Shacknews. Archived from the original on June 3, 2016. Retrieved June 3, 2016. http://www.shacknews.com/article/41928/titan-quest-interview
"Titan Quest Manual" (PDF). Steam. 2006. Archived (PDF) from the original on July 1, 2015. Retrieved June 2, 2016. http://cdn.akamai.steamstatic.com/steam/apps/4540/manuals/TQManual_US.pdf
Craddock, David (April 30, 2006). "Titan Quest Interview". Shacknews. Archived from the original on June 3, 2016. Retrieved June 3, 2016. http://www.shacknews.com/article/41928/titan-quest-interview
Ocampo, Jason (April 20, 2006). "E3 06: Titan Quest Exclusive Hands-On - Single-Player, Classes and Skills, and the New Asian Setting". GameSpot. Archived from the original on January 29, 2015. Retrieved June 3, 2016. http://www.gamespot.com/articles/e3-06-titan-quest-exclusive-hands-on-single-player-classes-and-skills-and-the-new-asian-setting/1100-6147991/
"Titan Quest Manual" (PDF). Steam. 2006. Archived (PDF) from the original on July 1, 2015. Retrieved June 2, 2016. http://cdn.akamai.steamstatic.com/steam/apps/4540/manuals/TQManual_US.pdf
"Titan Quest Manual" (PDF). Steam. 2006. Archived (PDF) from the original on July 1, 2015. Retrieved June 2, 2016. http://cdn.akamai.steamstatic.com/steam/apps/4540/manuals/TQManual_US.pdf
"Titan Quest Manual" (PDF). Steam. 2006. Archived (PDF) from the original on July 1, 2015. Retrieved June 2, 2016. http://cdn.akamai.steamstatic.com/steam/apps/4540/manuals/TQManual_US.pdf
Ocampo, Jason (April 20, 2006). "E3 06: Titan Quest Exclusive Hands-On - Single-Player, Classes and Skills, and the New Asian Setting". GameSpot. Archived from the original on January 29, 2015. Retrieved June 3, 2016. http://www.gamespot.com/articles/e3-06-titan-quest-exclusive-hands-on-single-player-classes-and-skills-and-the-new-asian-setting/1100-6147991/
"Titan Quest Manual" (PDF). Steam. 2006. Archived (PDF) from the original on July 1, 2015. Retrieved June 2, 2016. http://cdn.akamai.steamstatic.com/steam/apps/4540/manuals/TQManual_US.pdf
Craddock, David (April 30, 2006). "Titan Quest Interview". Shacknews. Archived from the original on June 3, 2016. Retrieved June 3, 2016. http://www.shacknews.com/article/41928/titan-quest-interview
Ocampo, Jason (April 20, 2006). "E3 06: Titan Quest Exclusive Hands-On - Single-Player, Classes and Skills, and the New Asian Setting". GameSpot. Archived from the original on January 29, 2015. Retrieved June 3, 2016. http://www.gamespot.com/articles/e3-06-titan-quest-exclusive-hands-on-single-player-classes-and-skills-and-the-new-asian-setting/1100-6147991/
"Titan Quest Manual" (PDF). Steam. 2006. Archived (PDF) from the original on July 1, 2015. Retrieved June 2, 2016. http://cdn.akamai.steamstatic.com/steam/apps/4540/manuals/TQManual_US.pdf
"Titan Quest Manual" (PDF). Steam. 2006. Archived (PDF) from the original on July 1, 2015. Retrieved June 2, 2016. http://cdn.akamai.steamstatic.com/steam/apps/4540/manuals/TQManual_US.pdf
Craddock, David (April 30, 2006). "Titan Quest Interview". Shacknews. Archived from the original on June 3, 2016. Retrieved June 3, 2016. http://www.shacknews.com/article/41928/titan-quest-interview
Aihoshi, Richard (September 23, 2005). "Titan Quest Interview - Part 1". IGN. Archived from the original on May 23, 2016. Retrieved June 2, 2016. http://uk.ign.com/articles/2005/09/23/titan-quest-interview-part-1
Murdey, Chase (July 20, 2006). "Age of Titans: Brian Sullivan's Latest Adventures". Gamasutra. Archived from the original on April 16, 2016. Retrieved June 2, 2016. https://web.archive.org/web/20160416040359/http://www.gamasutra.com/view/feature/1863/age_of_titans_brian_sullivans_.php
Sullivan, Brian (2006). "Developer Blogs - Titan Quest Blog Kick Off". IGN. Archived from the original on July 17, 2012. Retrieved June 2, 2016. /wiki/Brian_Sullivan_(game_designer)
Goodsill, Jeff (May 30, 2006). "Titan Quest Designer Diary #7 - Looking Back and Summing Up Titan Quest". GameSpot. Archived from the original on May 23, 2016. Retrieved June 2, 2016. http://www.gamespot.com/articles/titan-quest-designer-diary-7-looking-back-and-summing-up-titan-quest/1100-6151841/
"Titan Quest Trailer and Interview". IGN. January 24, 2006. Archived from the original on July 17, 2012. Retrieved June 2, 2016. http://uk.ign.com/articles/2006/01/24/titan-quest-trailer-and-interview
Goodsill, Jeff (May 30, 2006). "Titan Quest Designer Diary #7 - Looking Back and Summing Up Titan Quest". GameSpot. Archived from the original on May 23, 2016. Retrieved June 2, 2016. http://www.gamespot.com/articles/titan-quest-designer-diary-7-looking-back-and-summing-up-titan-quest/1100-6151841/
Aihoshi, Richard (September 23, 2005). "Titan Quest Interview - Part 1". IGN. Archived from the original on May 23, 2016. Retrieved June 2, 2016. http://uk.ign.com/articles/2005/09/23/titan-quest-interview-part-1
Aihoshi, Richard (September 23, 2005). "Titan Quest Interview - Part 1". IGN. Archived from the original on May 23, 2016. Retrieved June 2, 2016. http://uk.ign.com/articles/2005/09/23/titan-quest-interview-part-1
Sullivan, Brian (2006). "Developer Blogs - Titan Quest Blog Kick Off". IGN. Archived from the original on July 17, 2012. Retrieved June 2, 2016. /wiki/Brian_Sullivan_(game_designer)
Sullivan, Brian (2006). "Developer Blogs - "Dev"olving into Design". IGN. Archived from the original on March 16, 2006. Retrieved June 2, 2016. /wiki/Brian_Sullivan_(game_designer)
Aihoshi, Richard (September 23, 2005). "Titan Quest Interview - Part 1". IGN. Archived from the original on May 23, 2016. Retrieved June 2, 2016. http://uk.ign.com/articles/2005/09/23/titan-quest-interview-part-1
"Titan Quest Trailer and Interview". IGN. January 24, 2006. Archived from the original on July 17, 2012. Retrieved June 2, 2016. http://uk.ign.com/articles/2006/01/24/titan-quest-trailer-and-interview
"Titan Quest - Client: Iron Lore Entertainment". Demiurge Studios. Archived from the original on January 18, 2009. Retrieved June 2, 2016. http://www.demiurgestudios.com/games/titan-quest/
"Titan Quest Manual" (PDF). Steam. 2006. Archived (PDF) from the original on July 1, 2015. Retrieved June 2, 2016. http://cdn.akamai.steamstatic.com/steam/apps/4540/manuals/TQManual_US.pdf
Schneider, Ben (April 11, 2006). "Titan Quest Designer Diary #6 - Weaving Mythology into the Story". GameSpot. Archived from the original on May 23, 2016. Retrieved June 2, 2016. http://www.gamespot.com/articles/titan-quest-designer-diary-6-weaving-mythology-into-the-story/1100-6147302/
Gibson, Ellie (April 20, 2006). "Titan Quest - Interview". Eurogamer. Archived from the original on August 31, 2011. Retrieved June 2, 2016. http://www.eurogamer.net/articles/p_titanquest
Lee, Garnett (April 25, 2006). "Titan Quest Preview". 1UP.com. Archived from the original on June 5, 2016. Retrieved June 2, 2016. https://web.archive.org/web/20160605171052/http://www.1up.com/previews/titan-quest_3
Schneider, Ben (April 11, 2006). "Titan Quest Designer Diary #6 - Weaving Mythology into the Story". GameSpot. Archived from the original on May 23, 2016. Retrieved June 2, 2016. http://www.gamespot.com/articles/titan-quest-designer-diary-6-weaving-mythology-into-the-story/1100-6147302/
Lee, Garnett (April 25, 2006). "Titan Quest Preview". 1UP.com. Archived from the original on June 5, 2016. Retrieved June 2, 2016. https://web.archive.org/web/20160605171052/http://www.1up.com/previews/titan-quest_3
Schneider, Ben (April 11, 2006). "Titan Quest Designer Diary #6 - Weaving Mythology into the Story". GameSpot. Archived from the original on May 23, 2016. Retrieved June 2, 2016. http://www.gamespot.com/articles/titan-quest-designer-diary-6-weaving-mythology-into-the-story/1100-6147302/
Bruno, Arthur (March 6, 2006). "Titan Quest Designer Diary #5 - Understanding the Skill System". GameSpot. Archived from the original on May 23, 2016. Retrieved June 2, 2016. http://www.gamespot.com/articles/titan-quest-designer-diary-5-understanding-the-skill-system/1100-6145367/
Walker, John (August 3, 2011). "Titanic Quest: Crate Speak About Grim Dawn". Rock Paper Shotgun. Archived from the original on August 16, 2011. Retrieved June 2, 2016. https://www.rockpapershotgun.com/2011/08/03/titanic-quest-crate-speak-about-grim-dawn/
Sheidow, Michael (December 26, 2006). "Voodoo Extreme awards Titan Quest with Best Art Direction for 2006!". Blogger. Archived from the original on May 28, 2016. Retrieved June 2, 2016. http://mikesheidow.blogspot.co.uk/2006/12/igncom-awards-titan-quest-with-best-art.html
Sullivan, Brian (2006). "Developer Blogs - "Dev"olving into Design". IGN. Archived from the original on March 16, 2006. Retrieved June 2, 2016. /wiki/Brian_Sullivan_(game_designer)
Sheidow, Michael (March 12, 2008). "Watch Your Head - Concept Sketches". Blogger. Archived from the original on May 28, 2016. Retrieved June 2, 2016. http://mikesheidow.blogspot.co.uk/2008/03/watch-your-head-concept-sketches.html
Mirabello, Joe (2006). "Developer Blogs - Giving Titan Quest an Edge: Weapons in the Ancient World". IGN. Archived from the original on June 14, 2006. Retrieved June 2, 2016. https://web.archive.org/web/20060614140317/http://titanquestvault.ign.com/View.php?view=columns.Detail&id=11
Gibson, Ellie (April 20, 2006). "Titan Quest - Interview". Eurogamer. Archived from the original on August 31, 2011. Retrieved June 2, 2016. http://www.eurogamer.net/articles/p_titanquest
Sheidow, Michael (February 21, 2006). "Titan Quest Creature Feature, Part One". IGN. Archived from the original on March 16, 2006. Retrieved June 2, 2016. http://uk.ign.com/articles/2006/02/21/titan-quest-creature-feature-part-one
Doggett, Travis (April 28, 2006). "Artist Blog - Travis Doggett". Titan Quest-Fr. Archived from the original on April 7, 2016. Retrieved June 2, 2016. http://www.titanquest-fr.com/voir-blog_interview-a2.html
Labore, Brian (2006). "Developer Blogs - Titan-imation". IGN. Archived from the original on March 16, 2006. Retrieved June 2, 2016. https://web.archive.org/web/20060316110430/http://titanquestvault.ign.com/View.php?view=columns.Detail&id=4
Aihoshi, Richard (October 3, 2005). "Titan Quest Interview - Part 2". IGN. Archived from the original on November 3, 2010. Retrieved June 2, 2016. http://uk.ign.com/articles/2005/10/03/titan-quest-interview-part-2
Aihoshi, Richard (October 3, 2005). "Titan Quest Interview - Part 2". IGN. Archived from the original on November 3, 2010. Retrieved June 2, 2016. http://uk.ign.com/articles/2005/10/03/titan-quest-interview-part-2
Potter, Tom (May 17, 2006). "Titan Quest Designer Diary #2 - Rebuilding the Ancient World". GameSpot. Archived from the original on May 23, 2016. Retrieved June 2, 2016. http://www.gamespot.com/articles/titan-quest-designer-diary-2-rebuilding-the-ancient-world/1100-6140934/
"Titan Quest Trailer and Interview". IGN. January 24, 2006. Archived from the original on July 17, 2012. Retrieved June 2, 2016. http://uk.ign.com/articles/2006/01/24/titan-quest-trailer-and-interview
Potter, Tom (2006). "Developer Blogs - Really Coming Together". IGN. Archived from the original on July 17, 2012. Retrieved June 2, 2016. https://web.archive.org/web/20120717165026/http://titanquestvault.ign.com/View.php?view=columns.Detail&id=3
McGuire, Max (2006). "Developer Blogs - World "Dev"elopment". IGN. Archived from the original on September 8, 2007. Retrieved June 2, 2016. https://web.archive.org/web/20070908180957/http://titanquestvault.ign.com/View.php?view=columns.Detail&id=10
Rausch, Allen (June 24, 2005). "Titan Quest Preview". GameSpy. p. 2. Archived from the original on August 8, 2016. Retrieved June 2, 2016. http://pc.gamespy.com/pc/untitled-iron-lore-rpg/628771p1.html
Wallis, Alistair (June 8, 2007). "Tooling Around: Pathfinding With The PathEngine SDK". Gamasutra. Archived from the original on May 13, 2015. Retrieved June 2, 2016. https://www.gamedeveloper.com/game-platforms/tooling-around-pathfinding-with-the-pathengine-sdk
Murdey, Chase (July 20, 2006). "Age of Titans: Brian Sullivan's Latest Adventures". Gamasutra. Archived from the original on April 16, 2016. Retrieved June 2, 2016. https://web.archive.org/web/20160416040359/http://www.gamasutra.com/view/feature/1863/age_of_titans_brian_sullivans_.php
Gibson, Ellie (April 20, 2006). "Titan Quest - Interview". Eurogamer. Archived from the original on August 31, 2011. Retrieved June 2, 2016. http://www.eurogamer.net/articles/p_titanquest
Gibson, Ellie (April 20, 2006). "Titan Quest - Interview". Eurogamer. Archived from the original on August 31, 2011. Retrieved June 2, 2016. http://www.eurogamer.net/articles/p_titanquest
Bruno, Arthur (March 6, 2006). "Titan Quest Designer Diary #5 - Understanding the Skill System". GameSpot. Archived from the original on May 23, 2016. Retrieved June 2, 2016. http://www.gamespot.com/articles/titan-quest-designer-diary-5-understanding-the-skill-system/1100-6145367/
Rausch, Allen (June 24, 2005). "Titan Quest Preview". GameSpy. p. 2. Archived from the original on August 8, 2016. Retrieved June 2, 2016. http://pc.gamespy.com/pc/untitled-iron-lore-rpg/628771p1.html
Gibson, Ellie (April 20, 2006). "Titan Quest - Interview". Eurogamer. Archived from the original on August 31, 2011. Retrieved June 2, 2016. http://www.eurogamer.net/articles/p_titanquest
Bruno, Arthur (2006). "Developer Blogs - Defeating Design Dilemmas". IGN. Archived from the original on March 16, 2006. Retrieved June 2, 2016. https://web.archive.org/web/20060316110210/http://titanquestvault.ign.com/View.php?view=columns.Detail&id=5
Walker, John (August 3, 2011). "Titanic Quest: Crate Speak About Grim Dawn". Rock Paper Shotgun. Archived from the original on August 16, 2011. Retrieved June 2, 2016. https://www.rockpapershotgun.com/2011/08/03/titanic-quest-crate-speak-about-grim-dawn/
"Titan Quest Trailer and Interview". IGN. January 24, 2006. Archived from the original on July 17, 2012. Retrieved June 2, 2016. http://uk.ign.com/articles/2006/01/24/titan-quest-trailer-and-interview
Walker, John (August 3, 2011). "Titanic Quest: Crate Speak About Grim Dawn". Rock Paper Shotgun. Archived from the original on August 16, 2011. Retrieved June 2, 2016. https://www.rockpapershotgun.com/2011/08/03/titanic-quest-crate-speak-about-grim-dawn/
"Titan Quest Developer Interview - Part 1". The Gamers' Temple. 2006. Archived from the original on May 23, 2016. Retrieved June 2, 2016. https://www.gamerstemple.com/previews/pc/965/2/titan-quest-developer-interview-part-1
Morton, Scott (2005). "Developer Blogs - Aural Reactions". IGN. Archived from the original on March 16, 2006. Retrieved June 2, 2016. https://web.archive.org/web/20060316110725/http://titanquestvault.ign.com/View.php?view=columns.Detail&id=6
Morton, Scott (2005). "Developer Blogs - Aural Reactions". IGN. Archived from the original on March 16, 2006. Retrieved June 2, 2016. https://web.archive.org/web/20060316110725/http://titanquestvault.ign.com/View.php?view=columns.Detail&id=6
Morton, Scott (January 6, 2006). "Titan Quest Designer Diary #3 - Music and Sound of an Ancient World". GameSpot. Archived from the original on May 23, 2016. Retrieved June 2, 2016. http://www.gamespot.com/articles/titan-quest-designer-diary-3-music-and-sound-of-an-ancient-world/1100-6142039/
Morton, Scott (2005). "Developer Blogs - Aural Reactions". IGN. Archived from the original on March 16, 2006. Retrieved June 2, 2016. https://web.archive.org/web/20060316110725/http://titanquestvault.ign.com/View.php?view=columns.Detail&id=6
Morton, Scott (January 6, 2006). "Titan Quest Designer Diary #3 - Music and Sound of an Ancient World". GameSpot. Archived from the original on May 23, 2016. Retrieved June 2, 2016. http://www.gamespot.com/articles/titan-quest-designer-diary-3-music-and-sound-of-an-ancient-world/1100-6142039/
"Titan Quest Developer Interview - Part 1". The Gamers' Temple. 2006. Archived from the original on May 23, 2016. Retrieved June 2, 2016. https://www.gamerstemple.com/previews/pc/965/2/titan-quest-developer-interview-part-1
Morton, Scott (2005). "Developer Blogs - Aural Reactions". IGN. Archived from the original on March 16, 2006. Retrieved June 2, 2016. https://web.archive.org/web/20060316110725/http://titanquestvault.ign.com/View.php?view=columns.Detail&id=6
Morton, Scott (January 6, 2006). "Titan Quest Designer Diary #3 - Music and Sound of an Ancient World". GameSpot. Archived from the original on May 23, 2016. Retrieved June 2, 2016. http://www.gamespot.com/articles/titan-quest-designer-diary-3-music-and-sound-of-an-ancient-world/1100-6142039/
"Titan Quest Manual" (PDF). Steam. 2006. Archived (PDF) from the original on July 1, 2015. Retrieved June 2, 2016. http://cdn.akamai.steamstatic.com/steam/apps/4540/manuals/TQManual_US.pdf
Surette, Tim (May 9, 2005). "PCs to undergo Titan Quest". GameSpot. Archived from the original on June 3, 2016. Retrieved June 2, 2016. http://www.gamespot.com/articles/pcs-to-undergo-titan-quest/1100-6123875/
"THQ.com > Titan Quest". THQ. Archived from the original on March 5, 2016. Retrieved June 2, 2016. http://www.thq.com/us/titan-quest/pc
"Titan Quest". Eurogamer. Archived from the original on April 4, 2016. Retrieved June 2, 2016. http://www.eurogamer.net/games/titan-quest
Walker, John (August 3, 2011). "Titanic Quest: Crate Speak About Grim Dawn". Rock Paper Shotgun. Archived from the original on August 16, 2011. Retrieved June 2, 2016. https://www.rockpapershotgun.com/2011/08/03/titanic-quest-crate-speak-about-grim-dawn/
ズー,「タイタン クエスト」と「グローリー オブ ザ ローマン エンパイア」を9月中に発売. 4Gamer.net. July 21, 2006. Archived from the original on May 11, 2008. Retrieved June 2, 2016. ズー,「タイタン クエスト」と「グローリー オブ ザ ローマン エンパイア」を9月中に発売
"THQ Brings All-Star Line-up to Steam". Steam. July 17, 2007. Archived from the original on October 12, 2007. Retrieved July 19, 2007. https://web.archive.org/web/20071012201738/http://steampowered.com/v/index.php?area=news&id=1115&cc=US
"THQ.com > Titan Quest: Gold Edition". THQ. Archived from the original on September 15, 2015. Retrieved May 28, 2016. http://www.thq.com/us/titan-quest-gold-edition/pc
ズー,「タイタンクエスト ゴールドエディション」を4月25日に発売. 4Gamer.net. March 21, 2008. Archived from the original on January 11, 2011. Retrieved May 28, 2016. ズー,「タイタンクエスト ゴールドエディション」を4月25日に発売
Walker, John (August 3, 2011). "Titanic Quest: Crate Speak About Grim Dawn". Rock Paper Shotgun. Archived from the original on August 16, 2011. Retrieved June 2, 2016. https://www.rockpapershotgun.com/2011/08/03/titanic-quest-crate-speak-about-grim-dawn/
Purchese, Robert (February 28, 2008). "Titan Quest developer closes doors". Eurogamer. Archived from the original on October 24, 2012. Retrieved May 27, 2016. http://www.eurogamer.net/articles/titan-quest-developer-closes-doors
McWhertor, Michael (June 18, 2013). "Nordic Games' plans for THQ titles in early stages, Deadly Creatures high on the list". Polygon. Archived from the original on May 6, 2016. Retrieved April 9, 2016. http://www.polygon.com/2013/6/18/4443524/nordic-games-thq-deadly-creatures-red-faction-darksiders-titan-quest
"Steam Community :: Group Announcements :: Titan Quest: Immortal Throne - BETA Patch - Multiplayer is back & Renderer Improvements". Steam. February 24, 2016. Archived from the original on May 6, 2016. Retrieved April 9, 2016. http://steamcommunity.com/games/TitanQuestImmortalThrone/announcements/detail/843667822461053411
McWhertor, Michael (August 31, 2016). "Titan Quest gets massive free update for its 10-year anniversary". Polygon. Archived from the original on January 29, 2023. Retrieved May 19, 2023. https://www.polygon.com/2016/8/31/12738104/titan-quest-anniversary-edition-update-thq-nordic
Lazarides, Tasos (June 16, 2015). "E3 2015: DotEmu is Bringing 'Titan Quest' to iOS, Likely as a Premium Title". Touch Arcade. Archived from the original on June 2, 2016. Retrieved June 2, 2016. http://toucharcade.com/2015/06/16/e3-2015-dotemu-titan-quest/
RPGamer (June 18, 2015). E3 2015 - Titan Quest - Gameplay Demo & Interview (Video). YouTube. Archived from the original on December 22, 2021. https://www.youtube.com/watch?v=5yteUQ9qmes
DotEmu (April 1, 2016). Titan Quest Mobile Edition - Dev Diary 1 (Video). YouTube. Archived from the original on December 22, 2021. /wiki/DotEmu
DotEmu (May 13, 2016). Titan Quest Mobile Edition - Dev Diary 2 (Video). YouTube. Archived from the original on December 22, 2021. /wiki/DotEmu
"Titan Quest is Available on iOS! (soon on Android)". Gamasutra. May 19, 2016. Archived from the original on May 27, 2016. Retrieved June 2, 2016. https://web.archive.org/web/20160527101345/http://www.gamasutra.com/view/pressreleases/273049/TITAN_QUEST_IS_AVAILABLE_ON_iOS_SOON_ON_ANDROID.php
"[Update: Release Date] DotEmu reveals that Titan Quest will be arriving for mobile devices soon". Droid Gamers. June 20, 2016. Archived from the original on June 29, 2016. Retrieved June 29, 2016. http://www.droidgamers.com/index.php/game-news/android-game-news/11347-update-dotemu-reveals-that-titan-quest-will-be-arriving-for-mobile-devices-soon
Nelson, Jason (November 7, 2018). "'Titan Quest' Gets Re-Released… Again, Which Means You'll Have to Re-Buy It… Again". Touch Arcade. Archived from the original on December 8, 2022. Retrieved May 19, 2023. https://toucharcade.com/2018/11/07/titan-quest-released-yet-again/
Nelson, Jason (January 12, 2021). "'Titan Quest: Legendary Edition' Launching Next Month, Brings All DLC and Tons of Technical Fixes in One Package". Touch Arcade. Archived from the original on May 19, 2023. Retrieved May 19, 2023. https://toucharcade.com/2021/01/12/titan-quest-legendary-edition-iphone-ipad-android-release-date/
Purchese, Robert (December 13, 2017). "Old Diablo-alike Titan Quest coming to Switch, PS4, Xbox One". Eurogamer. Archived from the original on May 10, 2022. Retrieved May 19, 2023. https://www.eurogamer.net/old-diablo-alike-titan-quest-coming-to-switch-ps4-xbox-one
Reseigh-Lincoln, Dom (June 27, 2018). "Titan Quest Will Support Local Co-Op From Launch On Nintendo Switch". Nintendo Life. Archived from the original on August 2, 2021. Retrieved May 19, 2023. https://www.nintendolife.com/news/2018/06/titan_quest_will_support_local_co-op_from_launch_on_nintendo_switch
"Titan Quest coming to console platforms in 2018" (PDF). THQ Nordic. December 13, 2017. Retrieved May 19, 2023. https://embracer.com/wp-content/uploads/2022/11/Titan-Quest-coming-to-console-platforms-in-2018-171213.pdf
Birnbaum, Jon (January 26, 2007). "Titan Quest: Immortal Throne Interview". GameBanshee. Archived from the original on March 11, 2007. Retrieved May 27, 2016. https://web.archive.org/web/20070311111405/http://www.gamebanshee.com/interviews/titanquestimmortalthrone1.php
Sinclair, Brendan (November 3, 2006). "Titan Quest expansion, new Juiced and MX games on the way". GameSpot. Archived from the original on December 18, 2015. Retrieved May 27, 2016. http://www.gamespot.com/articles/titan-quest-expansion-new-juiced-and-mx-games-on-the-way/1100-6161012/
"THQ.com > Titan Quest: Immortal Throne". THQ. Archived from the original on February 23, 2015. Retrieved May 27, 2016. http://www.thq.com/us/titan-quest-immortal-throne/pc
ズー,「Titan Quest」の拡張パック「タイタンクエスト〜イモータル スローン〜拡張パック 日本語マニュアル付 英語版」を3月23日に発売. 4Gamer.net. February 9, 2007. Archived from the original on May 4, 2008. Retrieved May 27, 2016. ズー,「Titan Quest」の拡張パック「タイタンクエスト〜イモータル スローン〜拡張パック 日本語マニュアル付 英語版」を3月23日に発売
Chalk, Andy (November 17, 2017). "A new Titan Quest expansion takes players into the realm of the Norse gods". PC Gamer. Archived from the original on November 9, 2020. Retrieved November 17, 2017. http://www.pcgamer.com/a-new-titan-quest-expansion-takes-players-into-the-realm-of-the-norse-gods
O'Conner, Alice (May 10, 2019). "Titan Quest gets Atlantis expansion, 13 years after launch". Rock Paper Shotgun. Archived from the original on December 18, 2022. Retrieved May 19, 2023. https://www.rockpapershotgun.com/titan-quest-atlantis-expansion-released
O'Conner, James (March 24, 2020). "Titan Quest On PS4 And Xbox One Finally Gets A Second Expansion". GameSpot. Archived from the original on September 7, 2022. Retrieved May 19, 2023. https://www.gamespot.com/articles/titan-quest-on-ps4-and-xbox-one-finally-gets-a-sec/1100-6475198/
"Atlantis out now on consoles!". Titan Quest website. March 31, 2020. Archived from the original on February 14, 2023. Retrieved May 19, 2023. https://titanquestgame.com/atlantis-out-now-consoles/
"Games". Pieces Interactive. Archived from the original on April 26, 2020. Retrieved May 19, 2023. https://www.piecesinteractive.se/games
Bolding, Jonathan (December 4, 2021). "Classic action RPG Titan Quest has a new expansion that goes back to China". PC Gamer. Archived from the original on February 6, 2023. Retrieved May 19, 2023. https://www.pcgamer.com/classic-action-rpg-titan-quest-has-a-new-expansion-that-goes-back-to-china/
"Titan Quest: Eternal Embers". Digital Arrow. Archived from the original on January 23, 2022. Retrieved May 19, 2023. https://digital-arrow.com/titan-quest-eternal-embers/
"Titan Quest for PC Reviews". Metacritic. CBS Interactive. Archived from the original on March 5, 2016. Retrieved May 29, 2016. https://www.metacritic.com/game/titan-quest/critic-reviews/?platform=pc
"Titan Quest for iPhone/iPad Reviews". Metacritic. CBS Interactive. Archived from the original on September 16, 2020. Retrieved November 8, 2018. https://www.metacritic.com/game/titan-quest/critic-reviews/?platform=ios-iphoneipad
"Titan Quest for PlayStation 4 Reviews". Metacritic. CBS Interactive. Archived from the original on October 30, 2020. Retrieved November 8, 2018. https://www.metacritic.com/game/titan-quest/critic-reviews/?platform=playstation-4
"Titan Quest for Xbox One Reviews". Metacritic. CBS Interactive. Archived from the original on November 22, 2020. Retrieved November 8, 2018. https://www.metacritic.com/game/titan-quest/critic-reviews/?platform=xbox-one
"Titan Quest for Switch Reviews". Metacritic. CBS Interactive. Archived from the original on September 19, 2020. Retrieved November 8, 2018. https://www.metacritic.com/game/titan-quest/critic-reviews/?platform=nintendo-switch
Neigher, Eric (June 26, 2006). "Titan Quest Review". 1UP.com. Archived from the original on June 5, 2016. Retrieved May 29, 2016. https://web.archive.org/web/20160605171122/http://www.1up.com/reviews/titan-quest
Rossignol, Jim (June 30, 2006). "Titan Quest - Sisyphus or Dionysus?". Eurogamer. Archived from the original on March 5, 2016. Retrieved May 29, 2016. http://www.eurogamer.net/articles/r_titanquest_pc
Davis, Ryan (June 26, 2006). "Titan Quest Review". GameSpot. Archived from the original on September 14, 2015. Retrieved May 29, 2016. http://www.gamespot.com/reviews/titan-quest-review/1900-6153206/
Lopez, Miguel (June 27, 2006). "Review - Titan Quest". GameSpy. Archived from the original on August 7, 2016. Retrieved May 29, 2016. http://pc.gamespy.com/pc/titan-quest/715247p1.html
Rich, Rob (May 26, 2016). "Titan Quest Review: A Little Late". Gamezebo. Archived from the original on June 18, 2016. Retrieved June 18, 2016. https://www.gamezebo.com/reviews/titan-quest-review-a-little-late/
McNamara, Tom (June 23, 2006). "Titan Quest Review". IGN. Archived from the original on March 11, 2007. Retrieved May 29, 2016. http://uk.ign.com/articles/2006/06/23/titan-quest-review
Marrow, Mark (June 23, 2006). "Titan Quest Review". PALGN. Archived from the original on February 25, 2008. Retrieved May 29, 2016. https://web.archive.org/web/20080225194857/http://palgn.com.au/article.php?title=Titan+Quest+Review&id=4784
Kieldsen, Sam (June 30, 2006). "Review - Titan Quest (PC Zone)". Computer and Video Games. Archived from the original on July 3, 2006. Retrieved May 29, 2016. https://web.archive.org/web/20060703093819/http://www.computerandvideogames.com/article.php?id=142302
Musgrave, Shaun (May 20, 2016). "'Titan Quest' Review – It's A Win, But At What Cost". TouchArcade. Archived from the original on May 21, 2016. Retrieved May 29, 2016. https://toucharcade.com/2016/05/20/titan-quest-review/
Orry, Tom (July 5, 2006). "Titan Quest Review". VideoGamer.com. Archived from the original on March 4, 2016. Retrieved May 29, 2016. https://www.videogamer.com/pc/titan_quest/review.html
Sinclair, Brendan (July 11, 2006). "US PC game charts: June 25-July 1". GameSpot. Archived from the original on June 14, 2014. Retrieved May 29, 2016. http://www.gamespot.com/articles/us-pc-game-charts-june-25-july-1/1100-6153804/
Jenkins, David (July 4, 2006). "UK Sales Chart Sees GTA Besting Mario". Gamasutra. Archived from the original on March 15, 2016. Retrieved May 29, 2016. https://web.archive.org/web/20160315030906/http://www.gamasutra.com/view/news/100903/UK_Sales_Chart_Sees_GTA_Besting_Mario.php
Walker, John (August 3, 2011). "Titanic Quest: Crate Speak About Grim Dawn". Rock Paper Shotgun. Archived from the original on August 16, 2011. Retrieved June 2, 2016. https://www.rockpapershotgun.com/2011/08/03/titanic-quest-crate-speak-about-grim-dawn/
"Titan Quest for PC Reviews". Metacritic. CBS Interactive. Archived from the original on March 5, 2016. Retrieved May 29, 2016. https://www.metacritic.com/game/titan-quest/critic-reviews/?platform=pc
Neigher, Eric (June 26, 2006). "Titan Quest Review". 1UP.com. Archived from the original on June 5, 2016. Retrieved May 29, 2016. https://web.archive.org/web/20160605171122/http://www.1up.com/reviews/titan-quest
Rossignol, Jim (June 30, 2006). "Titan Quest - Sisyphus or Dionysus?". Eurogamer. Archived from the original on March 5, 2016. Retrieved May 29, 2016. http://www.eurogamer.net/articles/r_titanquest_pc
Lopez, Miguel (June 27, 2006). "Review - Titan Quest". GameSpy. Archived from the original on August 7, 2016. Retrieved May 29, 2016. http://pc.gamespy.com/pc/titan-quest/715247p1.html
Davis, Ryan (June 26, 2006). "Titan Quest Review". GameSpot. Archived from the original on September 14, 2015. Retrieved May 29, 2016. http://www.gamespot.com/reviews/titan-quest-review/1900-6153206/
McNamara, Tom (June 23, 2006). "Titan Quest Review". IGN. Archived from the original on March 11, 2007. Retrieved May 29, 2016. http://uk.ign.com/articles/2006/06/23/titan-quest-review
Marrow, Mark (June 23, 2006). "Titan Quest Review". PALGN. Archived from the original on February 25, 2008. Retrieved May 29, 2016. https://web.archive.org/web/20080225194857/http://palgn.com.au/article.php?title=Titan+Quest+Review&id=4784
Kieldsen, Sam (June 30, 2006). "Review - Titan Quest (PC Zone)". Computer and Video Games. Archived from the original on July 3, 2006. Retrieved May 29, 2016. https://web.archive.org/web/20060703093819/http://www.computerandvideogames.com/article.php?id=142302
Orry, Tom (July 5, 2006). "Titan Quest Review". VideoGamer.com. Archived from the original on March 4, 2016. Retrieved May 29, 2016. https://www.videogamer.com/pc/titan_quest/review.html
Musgrave, Shaun (May 20, 2016). "'Titan Quest' Review – It's A Win, But At What Cost". TouchArcade. Archived from the original on May 21, 2016. Retrieved May 29, 2016. https://toucharcade.com/2016/05/20/titan-quest-review/
Rich, Rob (May 26, 2016). "Titan Quest Review: A Little Late". Gamezebo. Archived from the original on June 18, 2016. Retrieved June 18, 2016. https://www.gamezebo.com/reviews/titan-quest-review-a-little-late/
"2007 Awards Category Details Role-Playing Game of the Year". interactive.org. Academy of Interactive Arts & Sciences. Retrieved November 8, 2023. https://www.interactive.org/awards/award_category_details.asp?idAward=2007&idGameAwardType=123
Evans-Thirlwell, Edwin (August 11, 2023). "Titan Quest 2 announced with a "hand-crafted" open world". Rock, Paper, Shotgun. Retrieved September 3, 2023. https://www.rockpapershotgun.com/titan-quest-2-announced-with-a-hand-crafted-open-world