The Aliens game back on the amiga was good (I think that was 20 years ago).
The only Alien game on the Amiga was
Alien 3 (which also appeared on SNES and Genesis). The one you're probably thinking of is either Activision's
Aliens on C64 etc or Electric Dreams'
Aliens (also 8-bit). Both came out in 1987, although I consider the latter to be superior (it was an early forefather of the first-person shooter).
This comment was edited on May 9, 12:45.