Woah, this game is cool!
I always wondered how those circle-drawing things worked, it's interesting that you make a game off of it! I think someone with enough skill can make some really intricate art with this, I would love to see that!
It would be awesome if you were to add a step-by-step images sheet, so that beginners can start out by making simple images by following the instructions. Maybe there's a simple way to draw a duck or a boat or something? Stuff like that.
I initially thought the game didn't work because of this... The "enter" key actually starts the transformers.
Great work, interested to see what this becomes!