GTA: Zombie Crusade
In a far away kingdom, a king rules his land with all his love and the people love him for it. However, an evil wizard want to take his land, so he turned the citizens into zombie to destroy the kingdom. The king has no choice, but to defend the kingdom. The game is played via mouse and the idea here is to place the towers strategically to where it can defend the castle. There are different kinds of towers that you can use. Each kill would earn you money and you can use the money to build more towers.