Wow...
Actually very nice. Needs abit more to it. It's VERY hard. You may want to possibly shrink the box you use to move around with just a tad bit more so you could actually do it without concentrating so hard that your head wants to explode, but I really liked it.
Put some more time into it. Do maybe about 5 (including this one) and make it into a decent game. Could be pretty cool.