It is created with Gamemaker by YoYo Games It isn't quite a realistic sim, but that was the closest, what you do is try to collect wind to keep the Wright Flyer airborn, also if you crash into houses, oh well. It is very cheap, but very fun.
Another easter egg, you can fly this, it is faster when you do something, it is probebly easy to figure out. The disadvantage of this is, even though it is fast, it is TINY, and harder to hit wind with.