That is a really good game. You have a solid core mechanic of controlling the plane and essentially a playground with some goals to play around with it. That is very clean design, great job! The controls are intuitive and feel nice, although it was confusing to me that you press the up key to go down, and down to go up. I seem to be the only one with that issue, so maybe it's a standard in flight sims, which I never played before?