
They can be found in many places, but arguably the highest-quality mod is BTD5 Expansion by K1d_5h31d0n.
Download the mod that you're looking for. The game costs $9.99 USD, though it does go on sale periodically. However, this works for both Windows and Mac. Note: There are no mods for mobile, so this guide only applies to Steam. When you restart the game, the mod should work. Move the GameAssembly.dll file into your BTD6 Steam folder (normally C:\Program Files (x86)\Steam\steamapps\common\BloonsTD6). Move the appropriate asset files (btd6_megabundle, resource_bundle, and/or sprite_atlases) into their appropriate folder at C:\Program Files (x86)\Steam\steamapps\common\BloonsTD6\BloonsTD6_Data\StreamingAssets\half. They can be found in many places, but arguably the highest-quality mods can be found in BowDown97's BTD6 Mods and Discussion Discord serveror Kosmic's Inferno : Integrum server. Note: As of January 11 th, 2020, Bloons TD 6 is not available on Mac devices. They can be found in many places, but arguably the highest-quality mods can be found in BowDown97's BTD6 Mods and Discussion Discord server or Kosmic's Inferno : Integrum server. Download the APK for the mod that you're looking for. If you have Bloons TD 6 downloaded and installed, save your data and uninstall it. If Play Protect is enabled, disable it. Open root/data/media/0/Android/data/6/files/Unit圜ache/Shared.
Move the btd6_megabundle, resource_bundle, and sprite_atlases files from the downloaded mod into the folder.Open Android/data/media/6/files/Unit圜ache/Shared.
Run through the first-time installation steps.The game costs $4.99 USD, though it does go on sale periodically. Note: There are no mods for iOS as of January 11th, 2020.