Great work, little tips for the future tho:
-A indicator what the middle of the screen is: Custom crosshair/cursor would help tremendously.
-Felt a bit confusing of what went where with all the greens and red and text and the fact you could break levels by jumping on the cubes, or stacking them. (Thought it was a feature at first.) In the end got lazy and just dragged all the cubes over the input locations to figure out wich one went where.
-Like the concept of programming text, however in game its just a nuisance to actually read, think it would have been better if you just made it plain text.