Bloons Tower Defense Battles

 is the multiplayer, competitive version of Bloons TD 5, with different strategies and tracks. In this game, players use their money to send bloons (Assault Mode only), purchase income boosts (Defend Mode only) and build towers, with 150 lives at the player's disposal to defend against both consistent, computer-generated bloons and, if playing in Assault Mode, unpredictable bloons sent by their opponent.

A Ninja Kiwi account is required in order to play this game.

The Main Menu of Bloons TD Battles has 5 options:
 * Quick Battle: Searches for an opponent to play against.
 * Private Battle: Lets the player create battles and join battles created by other players, but only if the Battle ID is known by the joining player.
 * High Scores: Checks the high scores leaderboard.
 * Towers & Bloons:
 * Towers and their final upgrades can be purchased here 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

 * Most bloons have an income change, either increasing or decreasing the player's only source of extra money in the game, a 6-second income boost.
 * Thus, as the player obtains no money from popping bloons, it is important to constantly improve their income by sending bloons with high income increase.
 * In Defend Mode on the other hand, the player's only way of improving their income is by purchasing periodic income boosts.
 * In Assault mode, you start off with $250 income. This means that you will get $250 per 6 seconds. By spending money to send out bloons at your opponent, you can increase the amount of money you get every 6 seconds. For example, if you send out 8 grouped red bloons, your income will increase by $1.
 * Bloons can be Regenerating or Camo. This will incur an additional multiplier on the cost of the bloon (the cost multiplies by ×1.5 and ×3 respectively, or ×4.5 if both are applied). MOAB-Class Bloons are unaffected, but their non-blimp children spawned are.

Towers

 * Upon playing the game for the first time the Dart Monkey, Tack Shooter, Sniper Monkey, Ninja Monkey and the Bomb Tower will be unlocked.
 * The next towers, which are unlocked upon reaching a 50, include the Ice Tower, Boomerang Thrower, Glue Gunner and Monkey Buccaneer.
 * The third tier of towers are unlocked upon reaching 250. These are the Monkey Ace, Mortar Tower, Spike Factory and Dartling Gun.
 * The final tier of towers, unlocked upon reaching 500, include the Super Monkey, Monkey Apprentice, Monkey Village and Banana Farm.

It is the best in the history gaming!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Rounds
Rounds are mostly the even-only equivalent of those in Bloons TD 5, with only a few exceptions. Generally, they are the equivalent of even rounds in BTD5, with the only exception being Round 43, representing Round 85 of BTD5 instead of 86, and Round 12 that is Round 25 of BTD5 instead of 24. However, in the iOS version, Round 12 is Round 24 of BTD5 instead of 25.

A round only begins after one player has popped all computer-generated bloons in the previous round, or after 20 + 3 * Round number seconds, whichever occurs earlier.

Other features

 * Battle Energy is required to begin a battle (except private matches); each battle costs 5. 1 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 2 for losing, and earns 5 for a win.
 * 10 are awarded for winning but only 2 for losing.
 * There are now 2 abilities, the spy and an extra tower slot. The spy costs 3 and lets you see the opponent's towers and the extra tower slot costs 6 and lets you have 1 extra tower.
 * The player can choose between Assault and Defensive Mode.
 * In Assault Mode, the player attempts to crush their opponent with bloons, similar to the classic Bloons TD Battles. After Round 30, all player-sent bloons will have their speed boosted by 5% each wave. MOAB-class bloons have full health after round 30, as opposed to 50% for rounds 1 to 30.
 * In Defend Mode, the player attempts to outlast their opponent. They cannot send any bloons, and have an initial income of $50. It can be increased by purchasing income boosts, which have a cooldown based on the income increase; the higher the boost, the longer the cooldown. Income is capped at $3,000, with MOAB-Class Bloons gaining 5% speed and 20% health per wave after 43.
 * Small income boost - Increases income by $2. Cost: $50.
 * Medium income boost - Increases income by $15. Cost: $300.
 * Large income boost - Increases income by $70. Cost: $1,000.
 * Huge income boost - Increases income by $700. Cost: $7,500.
 * In-game chat and the Dartling Gun were added to Bloons TD Battles in the same update that added the track Hydro Dam to the game.