Wrath of Earth

Wrath of Earth is a fairly obscure FPS with a sci-fi theme. It bears similarities to the Apogee FPS Blake Stone as well as some stylistic influences from the popular Mac game Marathon. This one-level demo version of the game (the full game has 12 levels) has you running around some sort of space base in your exoskeleton suit blasting Mechwarrior-looking mechs. It's an interesting game with some depth beyond the typical shoot-everything FPS with minor RPG, puzzle, and adventure elements, but unfortunately it was largely ignored upon its release in the mid 90's.