Battle Arena

Battle Arena' is a mode in Bloons TD Battles Mobile that was soft-released for Android on August 19, 2015. It involves three different leagues, and the player can enter any. They cost medallions, and each league has a different medallion cost. At the tower selection screen, your medallions along with your opponent's are then placed in a trophy and a map is picked. There is different rules in an arena (including but not limited to Free Boosts, Classic, etc.). You then battle with that rule chosen. Whoever wins the battle will take all the medallions. You can rematch if you'd like, but your opponent must accept. If you rematch, then your medallions are taken to the trophy and the same rules follows.

Your medallions you earned are placed in a Weekly Leaderboard. You qualify for it once you win 100 medallions. Staying in a certain position can win you medallions at the end of that week. Afterwards, the Weekly Leaderboards are then reset.