"Steer" the monkey with the arrow keys. If you walk into the right edge then you go on into the next level. Do not fall off of the world, houses, ice or whatever you are on. Do not touch red, either... If you die in the level then there is the level and your deaths.
If I get to 50 hearts & stars I will make a part 2. Level 13 is hard, and level 14 is SUPER HARD... Well, I mostly end there. :( If someone finds out why the monkey jumps away from the white writing, please tell me in the comments or remix it and put it right, that would be very nice...