I got stuck in a situation where the planet was stuck rebounding between the two bumpers. I couldn't find a button to tilt the solar system and free it.
At first I didn't know what the deal was with the game, until I saw the upgrade screen. Suddenly everything became a lot more interesting. I found gather water was far easier than ore, to the point that in order to get more ore I simply aimed the release spring at one of those three planets and let the planet-ball sink afterward. That was very efficient but probably not in the spirit of the game.
I'd have kept playing to unlock everything but the game got stuck in this endless bumper-ing.
As noted, sound effects would go a long way to increase player engagement. Along with some flashing lights and the usual pinball related tropes.