The music should preferably be changed into a more scifi, space vibe one. Tutorial should've stated that you can use the grey meteor to crash the black one, I did not realise you could do that till I read other comments. Black meteors should definitely not be coded as first spawn, as well as spawning in a row cause you just don't have any grey ones to collide them with. Otherwise it's fun, but not so much if it's all RNG involved.