"XCOM: Enemy Unknown" is a science fiction, strategy game pitting Earth against an invading alien force.

CNN: Two games in one in 'XCOM: Enemy Unknown'

His body seemed to have been taken over by some alien force.

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Barack Obama or Mitt Romney will face their share of difficult times, but it is unlikely the next president will be tested by an invading alien force.

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Even the more recent New Century Evangelion, which he sees primarily as a metaphor for teenage confusion, is set in a world devastated by attacks from a mysterious alien force.

CNN: The War Mangas

Barrowman's character is a mysterious, immortal man from the 51st century who adopted the identity of a World War II Royal Air Force pilot and ultimately ended up protecting mankind with the help of a secretive alien-hunting team of Earthlings.

CNN: STORY HIGHLIGHTS