Bigger Blast is the second Path 1 upgrade for the Mortar Tower in BTD5. It allows the Mortar Tower to create larger explosions. It costs $600 on Medium. In BTDB Mobile, it costs $400.

In BTD6, it is the first upgrade of Path 1. It costs $500 on Medium. Just like in BTD5, it increases the blast radius from ~30 to ~45. It also now increases pierce from 40 to 45.



  • The official art of the upgrade is that the monkey controlling the tower looks crazy.
  • The official artwork show the Monkey looking a butterfly while the cannon shoots a big explosion.
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