If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
Finn and Jake put the Ice King's secret tapes inside Beemo. Get Beemo back to the tree house before the Ice King grabs him. Earn points by throwing Beemo back and forth, jumping over obstacles and keeping Beemo safe until the end.
Arrow keys - To move.
Space bar - Throw Beemo.
Arrow up + Space bar - Jump and throw.