If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
Spongebob Squarepants and Sandy are practicing their karate moves in Bikini Bottom. You can help them out by clicking on Spongebob or Sandy at just the right time to land a blow. If you light up all three stars above their heads you can make them do a special finishing move.
This game is played with mouse only.