Bloons Tower Defense 2

Bloons TD 5

The original (Flash and freemium) Bloons TD 5 was released on December 13, 2011. The proprietary version of BTD5 was released on iOS worldwide on November 15, 2012, for iPhones and iPods with improved graphics and additional upgrades, tracks, towers, and bloon types. On November 19, 2014, it was released on Steam.

Bloons TD 4

Bloons TD 4 was released on October 26, 2009, as an online freemium game with a proprietary iOS version released on December 7, 2010, developed in conjunction with Digital Goldfish. A sandbox mode allows experimentation with weapons and enemies, a new bloon called the BFB (Brutal Floating Behemoth), and an apopalypse mode makes the gameplay continuous without pausing between levels.

Bloons TD 3

Bloons TD 3 was released on September 5, 2008, months after the release of Bloons Tower Defense 2, named differently due to a trademark dispute with Com2uS. As with the second game, new towers, bloons such as the MOAB (Massive Ordnance Air Bloon), and maps were added.

Bloons Tower Defense

Bloons Tower Defense is the first game in the BTD series, released on August 16, 2007, as a free flash browser game. Following the 2020 discontinuation of Adobe Flash Player, this initial entry was preserved through the use of Ruffle and WebAssembly-based emulation. As of 2026, the original 50-wave experience remains accessible via legacy web portals including Armor Games and CrazyGames, allowing for the continued study of the series’ early balancing and tower mechanics on modern hardware.