I was quite surprised and impressed by this game. For how simple it is, it has quite the addictive factor and high replay value. It feels like a "perception check" type game as you have to judge where the box is lined up and hope you don't hit a wall. The only thing I questioned was what exactly the percentages were. For example, I went through a wall at a speed of 5 and almost fit it perfectly but only had a percentage rating of 85% or so. I would assume the percent is how much of the space between the walls was filled, but is it also factoring in the speed at which you're moving?
Overall, great game. It's simple enough to quickly understand yet doesn't get drull and monotonous quickly. And I had no problem with the controls being the arrow keys instead of the WASD setup...some people just need to learn to "Adapt"