Well, it's iD's precursor to WOLFENSTEIN 3-D, which essentially makes it the great-grandfather of all FPS games. As you might imagine, that means it's pretty rudimentary. But it's still playable enough. Low enemy type count, low 'weapon' count, the perspective doesn't quite work right sometimes, and it gets mighty tedious, but there are some fun levels (suprisingly not TOO too maze-y!) and a little bit of game-spanning puzzle-solving to be done.

A respectable test run, but even the boys knew back in the day that that was pretty much all it was. Fun to try if you're curious.