3D Monster Maze

"If I had to choose just one programme to impress an audience with the capabilities of the ZX81, then 3D MONSTER MAZE would be the one without a doubt".

ZX COMPUTING

Source:

Back of Cassette Inlay

The Game to Top All Others. Unbelievable Graphics! Can you find your way through the Maze? The EXIT is there somewhere, but then so is a T-REX, and it's after YOU! All in 3D (The T-REX will actually run towards you in full perspective) you've never seen anything like this before.

Source:

ZX Computing magazine print ad from August 1982.