Been playing this game since it's inception. I've spent hundreds of dollars to support this developer. It was a great game early on. Now it's nearly impossible to win the last couple of planes. I've tried relentlessly. Now the game crashes upon opening. Can't even play it any longer. Fix the crashing and give me the last couple planes and I'll gladly give 5 stars and continue to monetarily support the developer. Until then... 1 star.