http://www.nongnu.org/enigma/
Enigma is a puzzle game inspired by Oxyd on the Atari ST and
Rock'n'Roll on the Amiga. The object of the game is to find uncover
pairs of identically colored Oxyd stones. Simple? Yes. Easy?
Certainly not! Hidden traps, vast mazes, laser beams, and, most of
all, countless hairy puzzles usually block your direct way to the
Oxyd stones … If you are new to Enigma, you may want to take a look
at a few screenshots or
peek at the user manual.
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