Diddy Kong Pilot is a canceled follow-up title of Diddy Kong Racing for the Game Boy Advance, which was developed by Rare. Diddy Kong was the main and titular character of the game. The game involves Donkey Kong characters racing in Planes on Mode 7-rendered courses. It was initially planned for early 2002, but Nintendo sold their share of Rare Ltd. to Microsoft and opted out of their publishing contract. Around the same time, in 2002-2003, before the decision was made to design it into a Banjo-Kazooie title, Diddy Kong Pilot was being redeveloped into an entirely different game. In 2005, the game was finalized as a Banjo-Kazooie title, Banjo-Pilot due to Microsoft's acquisition of Rare in 2002.