Williams Arcade Classics © 1995 Williams Entertainment, Incorporated.
Compilation of 6 arcade classics:
Defender (1980)
Stargate (1981) as 'Defender II'
Bubbles (1982)
Joust (1982)
Robotron: 2084 (1982)
"Sinistar" (1982)
Williams Arcade Classics was first released in 1995 in North America for PC's running DOS and Windows 3.1. It was then re-released in 1996 specifically for Windows 95, although the DOS version remained intact in the re-release.
Starting with this arcade collection, and continuing with all subsequent arcade compilation releases for all platforms, Stargate had to officially be retitled 'Defender II' for legal reasons.