The Dreamcast. Like Mars, Elvis and the St. Louis Browns, it is dead and defunct, but it still lives on as an ultimate symbol of what-if. Did You Know? Gaming's excellent video series chronicles it all in this video.
Jet Set Radio, Shenmue and today's 2K Sports series are all touchstones of the Dreamcast's brave and early history. Peter Moore, now the chief operating officer of Electronic Arts, still wears his Dreamcast pride on his sleeve (even if he won't reveal if Halo is tattooed underneath.)
Moore later went to Xbox, as did Fable, which was originally envisioned as a Dreamcast game. Did You Know Gaming details the rest. The Dreamcast has been gone more than 13 years, but it still lives on in the codebase of the NBA 2K series, begun by Visual Concepts under Sega before the studio was sold to Take-Two Interactive in 2005. That was in response to a deal that reshaped the sports video gaming landscape: The exclusive license the NFL sold to Madden NFL and EA Sports. Which Moore later helmed for four years.