Overall, a really solid game! I really like the gameplay, though it is very simple, its is quite effective. My only complaint is that the controls are very hard to control at the start but I think thats just how the game is designed to add difficulty. I don't really see the gravity theme being implemented. I mean you could argue that Rocket is linked with gravity but I guess its a bit of a stretch for me! The aesthetics of it is very simple and pretty polished! My one complaint for the aesthetic is that maybe a little bit of post processing and a little bit more colour here and there would help! The sound effects are there which is nice but I feel like this game could add a little bit of relaxing music or some sort of music to fill the void! Overall, very solid game! Well done!!