Rating: 5/5
Catacomb 3-D was one of the first FPS's around predating Wolfenstein 3D (which it was created by the same company id Software). This game was released in 1991 and had several sequels to it, however, these sequels were not created by id Software (They were outsourced to a separate company while id was working on the Wolfenstein 3D game). The game follows a wizard (though due to limitations on the PC the game hardly had any storyline to it) who is trying to track down another wizard that is trying to subjugate the world. From a gameplay perspective it follows that of the old Wolfenstein 3D as to where the player just hunts for the exit to the door massacring the enemies that show up.
You also need an emulator to run this game. To grab one quickly, please check out our DOS emulators section.