Australia 30th April 1999 U.S 30th April 1999 Europe 30th April 1999
Derelict is Weyland-Yutani bioweapons research facility on LV426.
A map made up from ravines and rooms, interconnected by doors and corridors, surrounding the derelict spacecraft.
Starting in a rest room, you make your way through the research facility, through multiple levels and desend into the derelict ship and desend again into a chamber on the other side.
Aliens bonus level
Available in multiplayer.