Bloons Tower Defense Bloons Tower Defense 5 – Lab Upgrades Completed maxgamr April 1, 2017 1 min read I finally upgraded all of the critical lab upgrades for Bloon Tower Defense 5. Lives and Resale are the only ones left to go. Not critical to surviving Mastery Mode. se adsense-midtext' style='float:left;margin:12px'> Continue Reading Previous: Bloons Tower Defense 5 – Mastery Mode StrategyNext: BTD5 Mastery Mode COMPLETE!!!