Play many tower defense games with vaious enemies and missions. In this type of games you have to stop the attacking waves of enemies. In most of the tower defense games the enemies have different strength and abilities. The defense towers are also with different skills and advantages. So you have to consider it very wisely where and what towers you build. Choose the best strategy in order to be able to stop all the enemy hordes. Waves of enemies usually comes diveded by short times intervals, so you can beat up one wave before you face another one. The main object that must be defended is a casle, other main base or some kind of treasure.