You have to collect all the food before you touch the pink square which is the prize. Make sure the green slime doesn't suck you up or else you will lose. The blue walls will not let you through.
I made the project by using all different kinds of blocks. To do this, you just have to explore all the options the computer gives you. You then want to test out your game or project and see if you like it. If you don't like it, then just make a few changes.