Bubble Tanks Tower Defense 2 April 22, 2005 By admin in B Tags: Tank Games, Tower Defense Games Read this if the game doesn't load. RIP Flash Go Fullscreen Bubble Tanks Tower Defense 2 Just like the BTTD First Version, the Bubble Tanks Tower Defense 2 (BTTD 2) is also a cool game that requires you to place towers to kills enemies. Take the training properly as you will get at the very start.