Moonshot is a cute physics game where you help the moon reach his home planet and capturing stars along the way. It uses the same tried and tested 'gravity' mechanics so common in games of the same genre. An added layer of complexity comes in the form of multi-planet systems, blackholes, and other planetary bodies that can affect a system's gravitational field.
In the end, it's a really simple and familiar game. It's easily forgettable but good for enough for quick arcade session.