Custom One Block is a release file of the Minecraft mod Waffles Custom One Block for Forge, made for Minecraft 1.16.5. It was published on July 26, 2022 and is 3.4 MB in size. For the full description, screenshots and every other version, visit the Waffles Custom One Block mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.
