An interesting curiosity from id Software especially when you draw the line from the original Catacomb to Wolfenstein 3D to gain a better appreciation of how a dull Dandy derivative moved the camera down into the maze and eventually turned into a groundbreaking first person shooter.

The game itself is pretty simplistic with basically one weapon and a few types of upgrade shots for it. As a result of this, the combat gets repetitive, while the level design contains a bunch of hidden walls you need to shoot to reveal which adds to the tedium.