K. Rool's Keep is the second to last world in Donkey Kong Country 2: Diddy's Kong Quest on the SNES, and is assumed to be the main fortress of King K. Rool. It is the highest location on Crocodile Isle, and thus much of the area is covered in ice and battered by large winds. Several levels within the castle itself include booby traps such as rising acid and bottomless pits. In this version, there is no boss of the area--the final area shows Diddy Kong and Dixie Kong approaching a tied-up Donkey Kong before he is yanked up high into the air as The Flying Krock ascends from the top of the castle. In the GameBoy Advance remake, a boss named Kerozene is inserted into this stage. Donkey Kong Island can also be seen in the background on the left side of the screen in the SNES version, but was removed in the remake. The levels in K. Rool's Keep include: Arctic Abyss, Windy Well, Castle Crush, Clapper's Cavern, Chain Link Chamber, and Toxic Tower.
K. Rool's Keep remains relatively unchanged in Donkey Kong Land 2 on the GameBoy, except for minor aesthetic differences from rising back out of the water.