There are 50 levels. Use the arrow keys to jump from key to key. Land on all the green keys to unlock the next level.
Avoid the gaps and the red keys cos you die immediately! Blue ones will fall off once you land on them. Orange ones will make your jumps reverse to the arrow inputs. Omgosh hate this one. Pink ones will teleport you to somewhere else on the keyboard. Yellow ones will teleport you to another yellow key. Purple ones will give you boost for your next jump. Cyan ones will give you a protective layer which protects you from red keys once.