The Unreal Tournament 2004 official demo includes five playable game modes, and offers fans their first taste of Unreal Tournament 2004's two new game modes: the introduction of the hyper-charged Onslaught mode and the return of the fan-favorite Assault mode, which last appeared in the original Unreal Tournament. The demo also features established gametypes like Deathmatch, Capture the Flag and Bombing Run.

-- Onslaught Mode: Onslaught is a epic-in-scope team-based challenge that pits two teams in bitter warfare across massive terrain maps in a frag-filled battle to destroy, capture and hold key power nodes. Vehicles play a major role as war-hardened flying and driving machines transport combatants to the "front" and serve as mobile platforms to launch devastating attacks on the enemy.

-- Assault Mode: In the completely redesigned Assault mode, gamers are challenged to attack or defend bases in a bigger and badder version of the Unreal Tournament classic; many Assault maps require the use of vehicles as a critical gameplay element.