Block by Block 1.1.3d is a release file of the Minecraft map Block by Block, made for Minecraft 1.21.8. It was published on September 24, 2025 and is 23.3 MB in size. For the full description, screenshots and every other version, visit the Block by Block map page.
How to install: Extract the .zip and move the world folder into .minecraft/saves; the map then appears in your Singleplayer list.