PC (Microsoft Windows)25 травня 2007 р.
Випущено ✓ 
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Enigma
Enigma is a puzzle video game based on Oxyd, and is released under the GPL. Enigma continues to be very popular as an open source multi-platform derivative of Oxyd now that Oxyd is no longer maintained. The open source fangame Enigma has been praised in reviews. Enigma is a marble game.
