You have to kill all the enemies, before they reach the end of the path. When a enemy has reached the end of the path, you will lose a live, when you get 0 lives you are going to die and have to start from the beginning. You have to buy some turrets, to kill the enemies, but the enemies will get harder to kill. But in this new version of the game you have to drag the turret to the position, where you want to place the turret. Developer -> "This is a 'remastered' version of the old Tower Defence game, we made. In this game we have improved some new turrets, like a Laser Beamer. We have added a Debug Map, but can only be showed if you have enabled the 'DebugMode'. We have removed the nodes, and added a place-building system to the game. We have added a new shop-system, wave-system and a new level-system. ".