If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
Help the hungry hippaul in eating as much food as possible and avoiding all the obstacles to score maximum points. In order to clear a stage, you must eat specific number of fruits and avoid all the obstacles as they will reduce your health. You can dive underwater to escape from logs but don't stay under water for longer time as you will lose a life.
Arrow Keys - Move.
Spacebar - Dive.