You are the Alien films' heroine, Ripley, and you pursue your monstrous extraterrestrial quarry with an armoury of devastating weaponry. The gameplay is more spectacular, the explosions more impressive and the bloodbaths even gorier, but the name of the game is essentially Doom.
The corridor scenario is ideal for a recreation of the Alien films' combat sequences, and the lighting effects seen here contribute to a genuinely creepy atmosphere. Had this game appeared sooner, it would have cornered a huge market, but Alien Trilogy is now up against Exhumed and the forthcoming Hexen - both of which are more technically accomplished.
While still impressive and atmospheric, Alien Trilogy is fast becoming outclassed.