Monkey Money (File:Monkey Dollar.png) or MM is the secondary currency in Bloons Tower Defense 5. The player can earn it by completing tracks or buy it in sets (File:CoinsIcon.png10 minimum). Once you complete a track and get Monkey Money, and you complete the same track on the same difficulty again, you receive 20% of the original reward. If you load a game that you previously finished, you are unable to get another reward. As of now, Monkey Money can buy Special Agents, play tracks with the Extreme Difficulty level, buy land for and build/upgrade Specialty Buildings, unlock Fast Track Mode, and buy