Episode 23 - Multiblock Madness - ClassicDuff is a release file of the Minecraft map ClassicDuff MultiBlock Madness LP, made for Minecraft 1.12.2. It was published on August 25, 2021 and is 476.2 MB in size. For the full description, screenshots and every other version, visit the ClassicDuff MultiBlock Madness LP map page.
How to install: Extract the .zip and move the world folder into .minecraft/saves; the map then appears in your Singleplayer list.