Major Havoc (or The Adventures of Major Havoc) is an action game released as an arcade video game by Atari, Inc. in 1984. A vector-based upright arcade cabinet, Major Havoc consists of several smaller game experiences played in succession, including a fixed shooter, platform game, and a lunar lander sequence. It was developed by Owen Rubin with some levels designed and tuned by Mark Cerny, who joined the development team approximately a year into the game's development.
The game was released as a dedicated cabinet in January 1984 and then in March 1984 as a conversion kit for older vector arcade games like Tempest. Dedicated versions of the game used a roller control for left-right movement, while conversion kits used their native controller hardware, such as the Tempest rotary spinner knob.