Dart Monkey Dart Spiker is a premium upgrade costing 25 NK coins. It gives the dart Monkey a "Melee" attack, along with embedding spikes into bloons hit. It also has a secret: If the Super Monkey Fan Club ability is used 25 times in one game, then the effect will work on 0-0, 0-1, 0-2, and 0-3 super monkeys for the rest of the game!