You are the square. Avoid the blue circles (enemies) and collect the yellow circles (coins). After you've collected all coins, move to the green area to complete the level. The first light green area is the starting point and the remaining ones are checkpoints. You can change the color of player. This is the most accurate parody of WHG on Scratch.
Enemies move at 10fps. Implemented 14 levels. Use turbo mode (shift+green flag) to make player movement faster (realistic). Only one coin sprite was used, using clones if necessary. Really cool. Warning: The starting point is not a checkpoint, so it won't be activated if you go from checkpoint to start point. Coins will not be reset after death, so once you collect it, you won't lose it. The square is shrunk on level 10 and 14, as doing otherwise will make it impossible to pass.