Defend your castle with wizards, ghosts, demons and many monsters in Kingdom Defense, an engaging Castle defense game. Discover 5 different castles, 15 types of monsters, +50 different levels and many features. Improve your 4 general skills by 6 times and become invincible. You will encounter more challenging monsters in every level. You will earn gold for every monster you kill. With the gold you earn, you can improve your castle or build new castles.