portal invasion

How to play

the game is a top down shooter. every 10 seconds a new wave of enemies will walk through the portal. you have to kill them. you get 3 guns with limited ammo: pistol(10), rifle(5), and machine(20). when you run out of ammo you can run   to the nearest box walk over it then all your guns will be refilled. when an enemy touches you its game over. 

Controls

arrows/wasd: move

scroll wheel: change gun

left click: shoot

Backstory

your name is bob the year is 202X. on the planet of notearth has developed portals that lead to bobs house. your job is to keep the aliens out of the house