You play as a Human Race That needs to defend the galaxy from the other races such as: Aliens and Oneys... U have 2 powerups: 

1. Black Hole that when you press e need 5 second to spawn 

2.Laser that when you press q spawns and instantly kills every enemy on its way it takes 10 seconds to reload..... 

SO WHAT ARE YOU WAITING FOR SAVE THE GALAXY BEFORE IT GETS DESTORYED!!!!