Protostar is a very cool online space game. In this cool space game you have to defeat the upcoming spaceships. You have to do all your best to defeat the enemies. Watch carefully the tutorial. Learn all the tricks in the game. When it comes to destroying the space ships give all your best. And collect the things that the already destroyed ships are leaving behind them. Sometimes you are going to get some very good special weapons, which you can use to destroy more spaceships at a time. Collect them, and use them carefully, because they are very limited. Protostar is one very good online space ship game. The more ships you destroy, the more points you are going to earn. Try keeping alive.