Sonic Shuffle (ports)

Between 2002 and 2003, ports for the game Sonic Shuffle were produced for the GameCube and later the XBOX. Both wound up never seeing the light of day due to low interest and fear of competition with Mario Party.

History
In 1999, Quarantine Development entered a deal with Visual Concepts to produce games for the SEGA Dreamcast. Of this came Super Stuntmeister, while another was held off until it got released on the XBOX, with the intent of it being a killer app; Green Jean (2002). In between both games, SEGA contracted both developers to produce an enhanced port of Sonic Shuffle.

In spite of testing well, SEGA pulled the plug on the GameCube version due to the release of Mario Party 4, and that the latter would overshadow their game. SEGA turned their focus to the XBOX, a console they helped back, but that version fell through as well; albeit under unknown circumstances.

The GameCube version was 90% completed (the credits are unfinished and some graphical glitches are apparent) and was made available on a GameCube development kit. It's unknown how complete the XBOX version is, let alone if it was ever worked on.