Black Border, Bloons Wiki

Prerelease:Bloons TD 6 - The Cutting Room Floor

What do these black borders mean? : r/btd6

Black Border, Bloons Wiki

Black Border, Bloons Wiki

Just got my first black border after like a year : r/btd6

How come monkey meadow has black border but park path have gold : r/btd6

Bloons TD 6 - How To Unlock This Secret Black Border! All Medals In BTD6

Black Border, Bloons Wiki

Unstable Concoction

Black Border, Bloons Wiki

I'm trying to black border #ouch, even though my current hardest bb is balance. What strategy would be best on this map? : r/btd6