The concept and graphics seems nice, but the controls are very unresponsive
if you keep either left or right pressed the balloon direction keeps going back and forward instead of a full circle, making very difficult to fly fast (the only realistic option is to hover by pressing Up repeatedly).
Also I would have expected to still be able to glide a bit when the balloon is deflating, but you just fall flat on yourself, you could achieve that later by pressing down maybe? (just a suggestion).