Aliens - Colonial Marines is a first-person shooter video game developed by Gearbox Software and published by Sega for the PlayStation 3. The game is based on the Aliens film series, and is set in the future. Players take on the role of a US Colonial Marine, as they battle against hordes of aliens. The game features a single-player campaign, as well as a cooperative and competitive multiplayer mode.

In Aliens - Colonial Marines, the player takes on the role of a US Colonial Marine, sent to investigate the disappearance of a colony on the planet LV-426. As the player explores the colony, they must face off against hordes of aliens, as well as a variety of human enemies. The game features a variety of weapons, including shotguns, rifles, and pistols, as well as a range of alien weapons. The game also features an array of gadgets, such as motion trackers and sentry guns, which can be used to help the player in battle.

Aliens - Colonial Marines features a variety of game modes, including a single-player campaign, a cooperative multiplayer mode, and a competitive multiplayer mode. In the single-player campaign, the player must complete a series of missions, as they battle their way through the alien infested colony. In the cooperative multiplayer mode, up to four players can join together to complete missions and take on waves of aliens. In the competitive multiplayer mode, up to 16 players can battle each other in a variety of game modes, such as deathmatch and team deathmatch.

Aliens - Colonial Marines is available for download from romsbase.com. The game is available in English, French, German, Spanish, Italian, and Polish, and is compatible with all versions of the PlayStation 3. The game is also available in a disc version, which includes all of the game's updates.