Board Thread:Plants vs. Zombies 2/@comment-24922984-20150628024520/@comment-24203813-20150702221407

SquashCake wrote: KEx24 wrote: Because there were no BraBus in the past two worlds. Not sure if Trap Tiles technically counts as a brain buster. Why?
 * Cough Cough Trap Tiles Cough Cough*

1. The regular level theme plays during the levels.

2. It is introduced extremely late in the world. While all other world had their exclusive brain buster introduced within the first 10 levels.

3. The Zomboss battle uses Trap Tiles.

So, I think it's better to consider it an environment modifier.