In Kingdom Defense you have to play the role of commander of the defense of the kingdom. The defense will have to be kept with the help of three towers, soldiers, traps and various improvements for them. For a successful level, you need to hold out under the onslaught of a hostile army, not allowing it to cling to the territory of the kingdom. At each level, you have to build your own defense strategy and develop it as the enemy advances and accumulates reserves to improve your defensive line.