MST3K Wiki says: "The Mystery Science Theater 3000 CD-ROM is an unreleased product planned for spring of 1996. It was to be produced by The Voyager Company and was only partially completed. Production apparently took place between Season 6 and Season 7. It was overseen by Trace Beaulieu.
A short promotional spot for the CD-ROM was broadcast during Turkey Day '95.
The CD-ROM was intended to contain two industrial shorts, Assignment: Venezuela and What’s It to You?, as well as a “flight simulator” and some other material.
A rough cut of Assignment: Venezuela was screened for a live audience at ConventioCon ExpoFest-A-Rama 2: Electric Boogaloo and was later released on VHS by Best Brains as a part of Assignment: Venezuela and Other Shorts, which was also included as a special feature on the DVD for Episode #407 in the Volume 7 (Rhino) and Volume VII (Shout!) collections.
The master tape of What’s It to You? was reportedly misplaced in the Best Brains offices, and has yet to surface. It is considered a “lost” short."