OIDS.X 10.0.4: System requirements: Power Macintosh running Mac OS X 10.1.3 or higher, and an OpenGL-compatible video card such as the ATI series Rage 128 or newer and all NVidia video cards. OIDS.X only runs on Mac OS X. The Classic Mac OS version of OIDS is still available below.

You need Stuffit Expander 5.5 or later to unstuff OIDS. You can download it for free from www.aladdinsys.com

Download OIDS.X (7.3MB)

OIDS 2.0.1 for Classic Mac OS: System requirements: Power Macintosh running System 7.5.3 through Mac OS 9.

You need Stuffit Expander 5.5 or later to unstuff OIDS. You can download it for free from www.aladdinsys.com

Download OIDS_2.0.1 (1.4MB)

OIDS: Expanding Galaxy I

Over 45 levels, playtested and categorized into four experience levels (Easy, Intermediate, Advanced, and Expert.)

Download Expanding Galaxy I (167KB)