Not every challenge comes in easily recognisable forms. In Bloons Tower Defense you help your best friend, a monkey, to defend against his natural enemies: baloons. (Don't ask me, I slept through all of my biology classes.) Baloons will keep coming to invade your base. And the only thing you can to help your monkey-pawed little monkey friend, is to defend it as well as you can. Place dart, ice, tack and bomb towers cleverly along the winding road the baloons will take. Set them up to automatically fire darst at anything coming their way. As you earn more money, you get to buy more towers for defense purposes. You get to upgrade your towers and make them fire projectiles even faster. You can even build entirely new types of towers as your enemy baloons become more resilient. Will your monkey friend stand victorious, or be overwhelmed by the helium-filled, plastic-skinned menace? Find out with Bloons Tower Defense!