Perplexity

Perplexity consists of 16 increasingly difficult levels, each a puzzling maze with one of four different 3D background themes. Collect the diamonds by pushing together the boulders scattered about the maze and push the keys to the correct doors to open them.

But watch out for the monsters who will chase you around the maze. And watch out also for the ‘mystery boulders’, which may give you a bonus score or a magic potion, but may also reverse some or all of the movement controls...then you’ve really got problems!