Nice game. I also didn't know at first how it worked, but figured it out. And I don't know if I got closer to the goal so it would have been nice to at least see where the goal actually is. (and an exit button, I had to Alt F4 to exit)
Thank you for your feedback.
A polished version with additional features is nearly done, it just needs levels.
Haven't thought of an exit function, thanks for pointing that out, I will implement it.