The premise sounds like it could be fun. I'd need to see more details to give more thorough feedback on your idea, but I'll come back and update my comments.
A few things that I'd like to know right off the bat are how restoring the planet will generate funds in your game and if those funds will be resources you can use in upgrades for your robots, buying better resources, etc. Something that feels off to me personally is the monetary incentive being a prominent objective in your game alongside planet restoration, but I think if you can tie the monetary gain back into specific ways to further your player's goal of restoring the planet, that can be improved.