That's a really good idea. I like the planes movement, feels really good!
But you get destroyed too quick. I think it would have been nice if there was a quick restart, so that you can have another try right after failing and maybe starting very close to the action. That would motivate alot to try and try again. :)
The backgrounds looks really nice but I would have liked if the planes looked more like planes. But maybe that wasn't possible with all the angles? :)