Sometimes the simplest games are the most difficult. That's certainly the case in Rebound, a game in which the only goal is to get a pole as far to the right as possible, but where actually getting very far is incredibly challenging. The trick is that the pole's only means of propulsion is bouncing off of the ground, and your only way to control it is by rotating it left or right. Grappling with the physics is hard enough, but then the game throws barriers in your way and slowly the ground will literally disappear beneath you. It only takes a few seconds to play, but actually making progress in Rebound will take a whole lot longer — check out the Windows, Mac, and web versions at the source link below.