The game is based in part on the series of films "Alien" and "Predator". Heroes represent three races: a human, an Alien and a Predator. Each hero is available in the single-player campaign in unique own missions and side missions in the locations of another characters. Playing an Alien, you can be three different creatures because Aliens have several forms in the process of growth.
The gameplay allows, among others, the following possibilities:
- quickly change the modes of vision,
- find opponents by sound, it is quite voluminous for this,
- move on the walls and ceiling,
Each character is limited in the choice of weapons, based on the characteristics of his race. Similarly, other processes also depend on this - for example, the health of an Alien increases from tearing the bodies of people or Predators, and from biting off their heads. In the game there are other active creatures - androids, various kinds of Aliens.