Play any type of Game at Y8.com. The biggest Game Collection to play free online. Flash, Unity 3D, Html5, Android, Java and Shockwave.
If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
Shoot the zombies before they get past to your guard tower.
Mouse - Aim / Shoot.
G - Throw Grenade.
Up / Down Arrow Keys / Mouse Wheel - Change Weapon (When Purchased).