An exercise in innovation, and damn near perfect..
but I'm gonna nitpick anyway:
the controls are too loose when you tap them, and then rapidly become oversensitive when you need to manipulate the rocket or the tool quicker. It's like there's no medium range of motion, you either tap the keys to make the thing go super-precise, super-slow, or you bolt across the room and toss blocks in the air and places they don't belong.
Other than that (which annoyed the piss out of me and really needed some more fine-tuning), the propaganda for IP stuff was pretty annoying. I guess that's who funded this great game, but on the internet you're dealing with a lot of people who are contrarians as soon as someone starts trying to pump some ideology their way. I'm really no different. I don't know much about patent laws and all this crap that's coming out of the machine, but I have a feeling if it actually needs to be broadcast like this, it's probably akin to DRM or some other BS that ends up hurting the consumer and creativity. People deserve protection for their ideas, but not necessarily to the degree that businesses try to enforce nowadays.