The story of Primal Fears, relayed through newspapers scattered randomly each level is a tribute to all survival kits released recently. The launch of a new drug that would help people get to change people. Despite the good parts of the story, however, Primal Fears is full of imperfections and strange design choices, such as the fact that the weapons be purchased through vending machines. In one of the levels are a police building, however instead of having access to weapons as you would expect in a game of survival is just another vending machine.
The character moves as in any shooter. WASD "moves the character and the mouse is used to point in one direction and to change weapon. The weapons are the best aspect of the game. Are able to modify the weapons to do more damage, have higher boots, larger radii of explosion, fire more often and so on, but also can modify the gadgets such as towers, RC cars among others. The game is not only use conventional weapons like shotguns and assault rifles. There are mini-guns, nail guns, flamethrowers, grenades and RPGs a saw. The game also has weapons that are useful both for saving ammo for example.