Alien Escape by DevilMarkus is a graphical adventure game for Amstrad CPC (english and spanish) in mode 0 and 1 and HTML which you can even play online on the author site. The HTML version has an auto mapping as you move.

You are Ellen Ripley, sole survivor of the Nostromo crew. The alien xenomorph has killed everyone else. Your mission : reach the escape pod and get off this ship before the creature finds you. The ship's self-destruct may be your only option, but first you need to gather essential items. Can you find Jones the cat and escape together ?