Flashback

In Flashback, you take on the role of Conrad B. Hart, an agent for the Galaxia Bureau of Investigation. After learning of a plot involving aliens disguised as government officials who want to destroy the Earth, Conrad makes a copy of his memory, just in case he's captured and has his memory erased by the aliens (and really, who doesn't do this these days?). As fate would have it, he is indeed captured, has his memory erased, and is left for dead after escaping his captors. And this is where our game begins.

Minimum system requirements: 

the original Flashback DOS version data files and, optionally, the Amiga music modules and the REminiscence-engine