Monkey Storm Beacon is the last upgrade on the bottom path for the Monkey Beacon in BTD3 and the last upgrade for the Monkey Beacon in BTD4. It is a very strong upgrade because when the player uses it, a storm of Super Monkeys come and wipe everything except M.O.A.B's off the screen. When the player upgrades the Monkey Beacon to this upgrade the tower gets changed to Super Monkey Storm Icon. In BTD5, this is replaced by the Super Monkey Storm special agent.