Good game with a nice mechanic that forces you not to spam bullets randomly! I think to improve it you could add music/sounds, a game over/restart screen, and the controls are kind of hard to read since the game starts immediately(to improve this you could either put the controls in the description, put a timer before the enemies spawn in the first game, or put a button to go to the controls). Overall a good game that just needs a bit more polish:- )