Australia 30th April 1999 U.S 30th April 1999 Europe 30th April 1999
Invasion is a Weyland-Yutani's Atmosphere Processor.
A map made up from control rooms, interconnected by doors and corridors.
From an APC you fight your way through multiple corridors and side rooms infested by aliens into the pump rooms where power needs to be activated. Desending to the lower levels and then back up, deactivating fans and proceeding through corridors to a lift that takes you to a landing dock.
Aliens bonus level
Predators bonus level
A singleplayer and bonus level map.