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...