In addition to cassette formats, the Atari and Commodore 64 versions were supplied on a single floppy disk.

As the player investigates this device, he is accidentally transported to another dimension and is trapped in a vast, maze-like cave.

The player navigates through each maze and collects energy orbs, which come in four different colors (red, yellow, green and blue).

Blue orbs can freeze enemies temporarily, giving the player a momentary advantage in a fight.

It was praised for being "wonderfully atmospheric" due to the technical achievement of the fractally created environment.

Overall it was described as "a fascinating snapshot of gaming history that showed how innovative, immersive and tense a first-person style arcade-adventure could be on 8-bit platforms".