Bloons Annihilation Defence rules: To start off, drag an affordable tower down on the side of the path, each having unique attacks, speed of attack, and damage. Then, press "a" for round one, "b" for round 2, and so on. The rounds will eventually get harder, and so you will need to upgrade your defence. Hover your mouse over bananas to collect them. Bananas will give you money. To get better towers, you can upgrade them in the top left corner pad when you have enough money. When you finish round z, feel free to head into Freeplay, by pressing 1 2 3 4 5 and so on for extremely hard rounds. Good luck, and may the bananas be with you!