Geometry Wars is a 2003 video game by Bizarre Creations. Initially a minigame in Project Gotham Racing 2, an updated version, titled Retro Evolved, was eventually released for the Xbox 360. That version, holds the record for the most downloaded Xbox Live Arcade Game.
Retro Evolved was later included in the 2007 game Geometry Wars: Galaxies, the first game in the series to be released for non-Microsoft platforms.