Bash K.Rool, also known as Bash K. Rool, is one of three unlockable Ape Arcade mini-games in Donkey Konga along with 100M Vine Climb and Banana Juggle. It can be purchased for 5,800 coins under the "Monkey Shines" submenu of DK Town. Bash K.Rool is the only mini-game without a two player competitive mode.
Bash K.Rool is a Whac-A-Mole clone, and the player's objective is to knock the Barrel Hammer onto King K. Rool's head as many times under a minute (60 seconds). There are three holes, and K. Rool repeatedly moves in and out of one at random; he sometimes retreats immediately after slightly poking his head out. The player earns a point for each time King K. Rool is hit. If they unsuccessfully hit K. Rool, the Barrel Hammer takes a few seconds to lift up.
As the game progresses, Diddy Kong also pops out of the holes. The player must avoid hitting Diddy or otherwise lose a point. The gameplay speeds up when the player gets 15 points. Like the other two mini-games, if the player replays the mini-game on the same day, the top score from that day is displayed in a corner.