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
Boat
Crazy
Candy
Jewel
Gem F
Gold
Cat I
Chine
Fun R
Color
Merge
Super
Shoes
Darts
Black
Ring
Monst
Zombi
Cake
Socce
Mahjo
Skibi
Hop Q
Egypt
Top B
Trigg
Pipe
Car E
Get R
Rocke
Winx
Block
Day A