Galaxy defender (itch) (Joe_but_bot)

Aliens want to attack your galaxy! Defend it!

Aliens will come down the screen, shoot them before they go past you, or you'll lose a life. The more score you get, the more different types of aliens will attack. There are 4 types of aliens: 

• Baby, these don't do much, they just move down, but don't sympathize with them! 1 point
• Shielder, these pesky aliens have a shield, not very durable though, you can break it with one hit! 2 points
•  Dodgers, these guys hate being hit, I wonder why, anyway you can see which way they're going by looking at their tentacles! 3 points
• Teleporters, uh, probably a bad idea to use RNG to add difficulty but oh well... 4 points

You have 5 lives. Every 50 points will get you an extra life added.