Monster KnockDown : Slingshot description

Complete interesting challenges here :
" Knock down monsters to the ground. don't break the precious bottle! "

-shoot the monsters with slingshot
-monster died when it knocked down to the ground
-this game use real physics 2D slingshot
-each level has different number of slingshot stone
-finish a lot of levels
-simple interesting game

How to play :
*Shoot monster use slingshot, until all of them fall to the ground ( knocked down ) .
*Don't break the bottle. level failed if bottle break / fall to the ground.
*You have a limited stone in each level