Bloons Tower Defense Battles

 is the multiplayer version of Bloons TD 5. The player must have a Ninja Kiwi account in order to play this game. The game was officially released on December 13, 2012 but was available as open beta the previous week.

It has a simple Main Menu with four actions available to the player:
 * Quick Battle: Searches for an opponent to play against.
 * High Scores: Checks the high scores leaderboard.
 * Towers & Bloons:
 * Towers and their final upgrades can be purchased using medallions.
 * Bloons Decals, essentially decoration for bloons, can also be purchased with medallions.
 * Store: Brings up the Store, similar to the Premium Store in Bloons TD 5.

Bloons

 * The player can send bloons to attack the opponent; each type has a specific price and income change.
 * Bloons can be Regenerating or Camo. This will incur an additional multiplier on the cost of the bloon. MOAB-Class Bloons are unaffected.

Towers

 * This means towers are unlocked in order of power, not rank.
 * Upon playing the game for the first time the Dart Monkey, Tack Shooter, Sniper Monkey, Ninja Monkey and the Bomb Tower will be unlocked. All tier 4 upgrades need to be seperately unlocked in the Towers section for a set amount of Medallions.
 * The next towers, which are unlocked by reaching a battle score of 50, include the Ice Tower, Boomerang Thrower, Glue Gunner and Monkey Buccaneer.
 * The third tier of towers are unlocked upon reaching 250 battle points. These are the Monkey Ace, Mortar Tower, Spike Factory and Dartling Gun (not yet available for gameplay use).
 * The final tier of towers, are unlocked by reaching 500 battle points, include the Super Monkey, Monkey Apprentice, Monkey Village and Banana Farm.

Other features

 * Battle Energy is required to do begin a battle; each battle costs 5 Battle Energy. 1 Battle Energy is recovered each 12 min.
 * Therefore, it takes exactly an hour to recharge enough Battle Energy for one game.
 * Medallions appear to be much like the Bloons TD Battles version of the Bloons TD 5 Monkey Money used to buy Towers and Bloon Decals in the Shop/Towers & Bloons menu.
 * The player earns two Medallions for losing, and earns five Medallions for a win.
 * 10 Battle Points are awarded for winning but only 2 Battle Points for losing.

Trivia

 * The main menu has the Monkey Ace, Robo-Monkey, Monkey Buccaneer and Ice Tower located on the left side, while the MOAB Mauler, Red Hot 'Rangs, Glue Splatter and Master of Fire are located on the right side. A Cripple Moab, Laser Vision and Ninja Monkey are in the middle.
 * This makes Bloons TD Battles the game in the Bloons Tower Defense series with the most towers at the main menu screen.
 * If you Hover you mouse over the Towers in the middle, they do a special animation. The Cripple MOAB fires every second or so, the Super monkey fires a continuous stream of Laser Blasts, & the Ninja monkey turns into a tree stump.
 * You must reach round 44 to go into Freeplay Mode.