GTA: Ultimate Defense 2
Giant bugs are attacking the castle and no one knew where they came from. Anyway, that is not the main concern since the king is still thinking of ways to stop the bugs from entering his territories. He would send some troops to the battlefield to stop the bugs from advancing. The game is played with a mouse and you need to make sure that none of these pest enter the castle door. You need to erect some towers for defense. Each kill would earn you money, which you can use to buy additional towers. You lose a part of your life each time a bugs enter your kingdom.