Enigma is a maze game whose objective is to find and uncover pairs of identically colored "Oxyd" stones. In some levels the player simply bounces the ball off a block to reveal its color and then finds its match to eleminate it. In other levels, the player must use the ball to open and close "doors", slide through tunnels and defeat different obstacles. It sounds simple but there are hidden traps, huge mazes, laser beams and intricate puzzles usually blocking the way to the Oxyd stones.
The game is based on/inspired by Oxyd a game that was originally available on the Atari ST.