Upgrade system is pretty cool here. I think anyone can choose his own preference, faster speed or faster wall recover.
Graphically it could be better. Zombies just dissapears when you kill/eat them. It could be more spectacular. It not feels of zombies too much. Maybe snake should protect kids from zombies? Why would zombies need a gems?
Hm. Here on Kongregate the game loses keyboard when click submit score button. But don't press it, the game autosubmit the scores. If you clicked submit then refresh page. The coder can fix this bug as soon as I find him online.
 "Snake and Zombies: Treasure Protection"){kind=icon}
 "Catchy Orbit"){kind=icon}
 "Coaster Racer 3"){kind=icon}
 "Caribbean Admiral"){kind=icon}
 "Orbox C"){kind=icon}
 "Motocross Nitro"){kind=icon}
 "Spectromancer: Gamer's Pack"){kind=icon}
 "Nuclearoids"){kind=icon}
 "Blast Master"){kind=icon}
 "Snake Classic"){kind=icon}
 "Sonny 2"){kind=icon}
 "Neverending Light"){kind=icon}
 "Smatch"){kind=icon}
 "Picpie Puzzler"){kind=icon}
 "Bucketball"){kind=icon}
 "Orbox B"){kind=icon}
 "Touch The Bubbles"){kind=icon}
It's fixed!