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).
Here is another zombie game in which you try to stop incoming monsters. Those will be more, so you need good aiming, preferably into the head. In addition, try also to repair the barricades and get some supplies for others.
mouse, change of gun - numbers.