Online computer games in the genre of first-person shooter, Unreal Tournament 2003 continued. As in previous series games, the action unfolds in the future, where fighters under the control of players trying to find out who among them best.
Set of modes such as Deathmatch, Team DeathMatch, Dominating, Capture the Flag remained virtually unchanged.
There were also brand new game modes not found in other games Onslaught - command mode for control of territory, with the use of technology (tanks, planes, etc.)