Defend the castle by buying cannons to destroy the advancing toys. The toys and cannons all vary in speed, range and power. Your objective is to survive 14 levels. Enemies will pass through to attack the castle. You lose the game if the castle is destroyed. When you destroy an enemy, you will get extra money to buy more cannons. When the game progresses, there will be more and more enemies and they will become stronger and stronger. There are a total of 14 levels. Have fun and good luck!