Special Buildings (BMC)

"You will not easily deal with MOAB-class without some serious power. Tier 4 Monkey upgrades require Special Buildings to unlock. Build a Special Building for an upgrade, then research that in the upgrades menu."

- "Real Power" goal description

Special Buildings in BMC are buildings that when built, will unlock the ability to research certain Tier 4 upgrades depending on the Special Building the player built. However, the Super Monkey requires a Special Building for both Tier 3 and Tier 4 upgrades. Certain Special Buildings can unlock two Tier 4 upgrades for two seperate towers, like the Experimental Materials Lab. The player cannot research a Tier 4 upgrade without researching all previous upgrades in the corresponding upgrade path.