It’s a pretty interesting idea to keep track of 3 different modes, and the gameplay being on simpler side actually lends well with that.
I think some sort of indication that you are about to die on another screen would help a lot, so that you not just constantly scrolling through them. An interesting idea would be drawing the shadows of planes on ground screen, and shadows of spaceships on sky screen. Or you know, just add some UI indicator.
Other than that, there are a couple of problems like objects not rotated properly, and white font on bright background that is hard to read. I think you also don’t scale your viewport, you can see a lot more if you fullscreen the game.
All in all, good job.