1) DOS game 2) Marble game 
Oxyd is a computer puzzle game released for the Amiga, Atari ST, Macintosh, PC, and the NeXT platform by Dongleware Verlags GmbH in 1990. It is a game of puzzles and tests that challenge the player to restart all the oxygen generators (called Oxyds) on his/her home planet. The Oxyds must be restarted by `opening` them in pairs of matching patter.....