Space invasor

LIke space invaders but inverted, this is for scratch game jam! (The controls are in the game) The game is about you being an alien that wants to invade the earth, but there are hundreds of ships that will prevent you, kill them to invade the earth! ok no, the game is infinite xdd. The game It's waves, comment your highest score! i used altern and swap wlid cards (I think they are used like this)