While the specific build number most closely aligns with the Version 54.0 update release window (April 2026), it is commonly associated with unofficial or repackaged versions of the game found in .zip formats.
The official update, released around early April 2026, introduced several significant features to the game: New Content & Towers Bloons.TD.6.Build.10077619.zip
The official game is available for purchase on Steam and Epic Games Store, and it is also included with Netflix and Apple Arcade subscriptions. Be cautious with .zip files from unofficial sources, as they may lack official support or contain security risks. While the specific build number most closely aligns
: A major overhaul of the Lich boss mechanics, including the spawning of targetable tombstones on the track. Technical Notes released around early April 2026