Planet 10

Planet 10 is 3D Pac Man clone. The game has a sci-fi story - people have discovered 10th planet, but scout ships sent to this planet were destroyed. The planet has very dangerous artificial creatures. The player moves in a 3D maze (but he has 2D map - looks like Pacman in a very small screen), collects "dots" (squares) and avoids ghosts. He uses a special radar and can see near ghosts. If he has a special power-up, he can kill/eat ghosts.

The game was finished and was reviewed in gaming magazines but didn't get released, likely due to copyright issues.