The game is based on the same technology that powered Unreal, but the design of Unreal Tournament shifted the series' focus to competitive multiplayer action. Development took 18 months, and the game was initially intended to be an expansion for Unreal. Unreal Tournament received critical acclaim, with reviewers praising the graphics, artificial intelligence and gameplay, although the console ports were noted for having limitations. The game won several awards, and remakes have been attempted by fans. The series has continued with the releases of sequels Unreal Tournament 2003 in 2002, Unreal Tournament 2004 in 2004, and Unreal Tournament 3 in 2007.