Capstone the "Pinnacle of Entertainment Software" has a checkered history of mostly bad games. Corridor 7 is probably the best of a bad batch and certainly a lot better than Body Count. Corridor 7 had a few interesting gimmicks like night and infrared vision for spotting hidden enemies and also featured a map where Wolf3D didn't. Capstone also managed to kluge together some haphazard multiplayer. Since the game is one big bug hunt and Wolf3D is pretty limited on map variety to can get boring pretty quickly. It's a game you played back when because there was nothing else to play and one you probably play now because you have some nostalgia for it. The soundtrack by Joe Abbati is also very interesting and contains some very good tracks making great use of the old FM Synth cards.
