Castle Defense upgrade is an excellent defence game with fresh cartoon graphics and a great variety of weapons and enemies.
Your task in Castle Defense upgrade is to defend your castle from hordes of invading monsters and ghouls, giant mutant slugs, the dreaded robot troll army…
You choose a selection of defensive weapons from the 4 options you have and then place them along the slimes route so that they stop the slime from reaching your castle.
Castle Defense has lots of challenging levels, warzones and enemies to vanquish. Each stage completed is rewarded. You collect the stars to upgrade weapons and increases its fire rate and damage.