Click on a blue button to select it and then add that instruction to the grey area by clicking on a grey code block. The aim of the game is to direct the robot to the light (The square with a circle in it) so that he can turn the light on. The controls (in order) are: blank, jump, forward, turn left, turn right, light switch, and use function.
13th April 2014 - Just realised level 4 is not working. I am working on a fix and will upload the new version ASAP.