Alien

Alien may refer to:

• Updates:
  • Invasion Community Update, a major update and campaign event in 2015.
    • Mercs vs. Aliens, a map competition resulting in maps for the update.

• Items:
  • Alien Cranium, a promotional cosmetic item for the Scout.
  • Alien Swarm Parasite, a promotional cosmetic item for all classes.
  • Area 451, a promotional cosmetic item for the Pyro.
  • Graylien, a cosmetic item for the Spy.
  • Metal Slug, a cosmetic item for the Pyro.
  • Sucker Slug, a cosmetic item for the Heavy.
  • Triboniophorus Tyrannus, a cosmetic item for the Pyro.
  • Unidentified Following Object, a cosmetic item for all classes.

• Games:
  • Alien: Isolation, a survival horror video game.
  • Alien Swarm, a top-down shoot-em-up video game.
  • Invasion, a pre-release design concept.
  • XCOM: Enemy Unknown, a strategy video game.