Platform: Sega Saturn

In 1992, after the failure of a deal to create a CD-ROM drive for the Super Nintendo Entertainment System, Sony approached Sega of America proposing that they collaborate on a next-generation CD-ROM console to compete with Nintendo. While Sega of America was open to the idea and even started testing the waters between the two companies by having each develop a handful of titles for the Sega CD, Sega of Japan shot down the concept. Consequently, Sony would reorient their efforts towards what would become the PlayStation, while Sega would develop their own next-gen console, the Sega Saturn, in-house. In an interview with Sega-16, Tom Kalinske cited the veto as a factor in his decision to step down as head of Sega of America.

The Saturn was going to have an attachment/follow-up console called the Sega Pluto, but only three prototypes were ever made and it never went to retail.