Over forty Galaxies for OIDS and OIDS.X, categorized into Easy, Intermediate, Advanced, and Expert skill levels.
Expanding Galaxy I is free and can be used by registered and unregistered users alike.
Classic and Mac OS X
Any Power Mac capable of running OIDS or OIDS.X.
If you do not have OIDS or OIDS.X you can get it from Mac Game Files.
