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
Home
Space
Monst
Baby
Fight
Birdy
Onet
City
Fligh
Squid
Tap T
Termi
Coin
Brawl
Water
Color
Endle
Neons
Conqu
Night
Banan
Bad G
Candy
Tank
Space
Arche
City
Soul
Hot J
Pirat
Axe S
Phila
Fish