Dongleware Verlags games

Oxyd is a 1990 puzzle video game developed for the Atari ST and ported to the Amiga, Macintosh, MS-DOS, and NeXT by Dongleware Verlags GmbH. It is a game of puzzles and tests to restart all the oxygen generators (called Oxyds) on the player's home planet. The Oxyds must be restarted by opening them in pairs of matching patterns, and (in colour versions) matching colours.