Enigma (2007) About the Game Reviews Gallery Similar Games Troubleshooting PC (Microsoft Windows) Mac Linux Release Date: 2007, May 25 Description: 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 Enigma continues to be very popular as an open source multi-platform derivative of Oxyd now that Oxyd is no longer maintained.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. Keywords: games released for unsupported platforms