If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
In the action game Castle Hero you have to defend your castle against hordes of enemy's throwing rocks, shooting arrows or use a gun. There are 4 big bosses to defeat. Castle Hero is a sequel to Age of Defense.
Mouse - Throw / Shoot.
1, 2 - Weapons.
Spacebar - Cast Spell Weapons.