This is somewhat old, but I don't think it's been posted anywhere on here. DK Vine asked a bunch of questions to Rare's Time Stamper, who previously revealed that it was suggested internally to make Donkey Kong Country 4 for the Nintendo DS. However, the idea didn't get much traction and it (along with a sequel to Grunty's Revenge) were passed over in favor of making Diddy Kong Racing DS;
An original DKC game from Microsoft-era, pre-Kinect Rare is definitely an interesting case of what could have been. Do you think the team would've been able to make a worthy sequel, based on their contemporary works and the new content in the GBA DKC ports?
"[Our saying] 'We'd really like to make DKC4' was nothing more than that; what the team would've liked to have done. After finishing the DKC3 conversion, finally our engine was at a point where we could add objects/enemies easily, the player's handling felt decent, the art too - with no more horrendously washed out backgrounds, the level designer had a good feel from recreating the original trilogy's level layout, and we thought it'd be good to put that into a 2.5D sequel [on Nintendo DS]."
An original DKC game from Microsoft-era, pre-Kinect Rare is definitely an interesting case of what could have been. Do you think the team would've been able to make a worthy sequel, based on their contemporary works and the new content in the GBA DKC ports?