Lots of money.
Held up in an abandoned barn, zombies cry out for your blood...kill 'em!
Aim with the mouse, click to shoot.
If you have grenades, then hold the space bar to aim and click the mouse to throw.
You can upgrade your weapon and grenade capacity and power.
When ammo power is fully upgraded, a single bullet can penetrate 2 zombies at once.
You can buy defensive barricades in the scroll box at the upgrade menu. These barricades will degrade to nothing if zombies destroy them. Some are stronger then others.
You will be ranked on accuracy,number of waves survived and kills, and ranked accordingly in the end.