What is Castle Clash? It is a strategy game where you fight against other players from all over the world. The battle is fast and furious, and all you can do is to attack and defend the enemy. It is very simple to play, and the best thing is that it is free to play. You can choose to play with one of your friends, or you can fight against other players. You will have a kingdom, and you will be able to attack and defend your kingdom. You can hire a number of powerful heroes, and they will help you with your battle. You can use their power to attack and defend the enemy.