Well, it could be okay, but wow, it has so many problems. The physics feel awful, with slow acceleration and mobility. The camera is so zoomed in that you can't see anything below you, so every jump is a blind leap of faith, and just running is almost as bad. There are empty stretches that accomplish nothing but waste time and memory. The controls don't easily with WASD movement. And when you upload a game made in unity, the width and height you set on the upload page has to account for the bar and border unity adds at the bottom, or some of the screen gets cut off.