Donkey Kong Racing
Donkey Kong Racing is an unreleased Nintendo GameCube game of the Donkey Kong series, intended as a sequel to Diddy Kong Racing. The game was first revealed at E3 2001, as a full-motion video trailer, and It was developed by Rare and was slated for a release in 2002. Due to Microsoft's acquisition of Rare, who lost the right to develop Donkey Kong games, the game was being reworked into Sabreman Stampede, but the game ended up being cancelled entirely.
The two other Donkey Kong games shown at E3 2001, Diddy Kong Pilot and Donkey Kong Coconut Crackers, were also cancelled but later reworked into Banjo-Pilot and Donkey Kong Coconut Crackers respectively.