The Timestrikers are an alien faction attempting to overtake Earth.
One of the most notable features of the game was the ability to remove limbs from enemies. All of the levels involve dark corridors, often like that of catacombs and crypts. On this mission, he visits various locations ranging from military bases in the present to Pharaonic tombs in ancient Egypt. The player takes on the role of an unnamed Marine whose mission is to stop the so-called 'Timestrikers', mutant beings invading different time epochs, from taking over Earth.