How about Playing Mayhem Area? In this game you have to survive by killing zombies. Make good use of the help, the ammo is very limited!
W to Jump A to Left D to Right Left Click to Fire
Water
Bowli
Picni
Finge
Camer
Evil
Holid
Ice S
City
Hallo
Skele
Old S
Asian
Pixel
Spin
Racin
The B
Check
Among
Choco
Class
Angel
Lucy
Resis
Machi
Footb
Rc 12
Moder
Data
Fruit
Lovie
Snile
Boom