It's a game where you and this man go back to the past to change the events. You first start off with no armor but with not very good armor a pistol and a tazer which doesn't get used or used not very much but it WILL kill your enemies. You have unlimited ammo and so do the enemies.
Now you can use the arrow keys or the WASD keys to move. You use your mouse to aim and you click to shoot. You can use the g key to throw a grenade.
As you get through the game you either buy the weapon or you pick up the weapon from a dead enemy you kill. Anyways there are guns like the assault rifle. You can buy a better helmet and better armor.
Then you get to the robots who fight the humans who kill each other. Either one will try to kill you, so you can watch the battle.
There are humans that carry the weapons you use and there are robots that carry WEAPONS that are similar to the weapons you use. But they use shotgun blasts, laser blasts, and rockets!
There's later on an ally who will help you.
But the rest you will find out but here's the link.
http://www.kongregate.com/games/coolbuddy/plazma-burst-forward-to-the-past1.6 Version
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http://www.kongregate.com/games/Eric_Gurt/plazma-burst-1-6