Aliens versus Humans: Missions

Aliens versus Humans: Missions introduces multiplayer PvP with three PvP modes. Challenge your friends or random people via Game Center. If you were awesome at the original X-Com, this is your chance to own the leader boards. What are you waiting for? In addition, you can play the single player mode where you play through 25 missions that follow a storyline about why the aliens are back on Earth, how they got here and it is up to you to figure out how to remove the alien threat.