Aliens: Infestation is a sci-fi action platformer for the Nintendo DS. It is based on the popular Aliens franchise and follows a squad of marines as they battle their way through hordes of aliens to complete missions and stay alive. The game has an old-school look, with classic pixel art graphics, and features side-scrolling levels full of puzzles and enemies to defeat. Players can choose from different classes such as tech or heavy weapons specialist, each with its own set of weapons and abilities which can be upgraded over time. In addition to fighting alien foes, players must also manage health levels, ammo supplies, and other resources in order to survive the infested planet they are stranded on.