Ribbit King (JP: Kero Kero King DX) is a sports game developed by Infinity and published by Bandai for the GameCube and PlayStation 2 platforms. The game is based on the fictional sport of Frolf (a portmanteau of "frog" and "golf"), which involves launching frogs towards a hole in the fewest number of shots. Frogs will hop a few more times after being launched depending on their stamina, and are likely to hit secondary score zones as well as power-ups and other surprises en route to the goal.
The game is the sequel to the 2000 PlayStation game Kero Kero King and uses a similar ruleset. The PlayStation 2 version, which came a little later in Japan, was called Kero Kero King Super DX and had a few extra features.