Unreal Tournament is a first-person arena shooter video game developed by Epic Games and Digital Extremes. The second installment in the Unreal series, it was first published by GT Interactive in 1999 for Windows, and later released on the PlayStation 2 and Dreamcast by Infogrames in 2000 and 2001, respectively. Players compete in a series of matches of various types, with the general aim of out-killing opponents. The PC and Dreamcast versions support multiplayer online or over a local area network. Free expansion packs were released, some of which were bundled with a 2000 re-release: Unreal Tournament: Game of the Year Edition.

A first-person shooter (FPS) is a video game centered on gun fighting and other weapon-based combat seen from a first-person perspective, with the player experiencing the action directly through the eyes of the main character. This genre shares multiple common traits with other shooter games, and in turn falls under the action games category. Since the genre's inception, advanced 3D and pseudo-3D graphics have proven fundamental to allow a reasonable level of immersion in the game world, and this type of game helped pushing technology progressively further, challenging hardware developers worldwide to introduce numerous innovations in the field of graphics processing units. Multiplayer gaming has been an integral part of the experience, and became even more prominent with the diffusion of internet connectivity in recent years.