Tribes: Vengeance

Tribes: Vengeance is a science fiction first-person shooter video game developed by Irrational Games and released by Vivendi Universal Games in October 2004. It was built on an enhanced version of the Unreal Engine 2.5, which Irrational Games called the Vengeance engine. Part of the Tribes series, in addition to its multiplayer network maps, Vengeance includes a complete single-player campaign. As a primarily first-person shooter, Tribes: Vengeance places the player in control of an infantry soldier in power armor. While the game is tailored for first-person shooting, the player can also toggle to a third-person view at any time. Additionally, there are multiple pilotable vehicles, which are restricted to third-person camera. The game's most distinguishing features are the jetpacks and "skis" offered on all variants of the power armor. Jetpacks allow the player to fly for short periods of time, using the player's energy meter. This energy regenerates whenever the jetpack is not active. Skiing may be activated any time the player is on foot and does not cost energy; this switches the player to a frictionless ground-travel mode, allowing the player to slide very rapidly down slopes and (with sufficient speed before activating the skis) across flat terrain.