Just reading the title I initially thought it was going to be about like Tapper in space. I was delightfully surprised with what I ended up playing. Everything from the art to the SFX to the mechanic really comes together well. I'm going to kind of parrot some feedback others have given, but oh well here it goes. I think the difficulty ramping takes too long. At first it was nice to ease me into the flow of the game, but then after about 30 seconds I was starting to get bored and wondered if it was going to get harder. Even with the difficulty up it starts to get monotonous after a while, perhaps adding stuff like powerups for a shield or an automatic laser that shoots asteroids that get near could help break up the pace. Like Arjun, I was also thinking maybe it would be a cool idea to explore defending the Earth from the asteroids.