JollyBoxes-1.3.4.jar is a release file of the Minecraft mod Jolly Boxes for Forge, made for Minecraft 1.16.4. It was published on December 23, 2020 and is 0.4 MB in size. For the full description, screenshots and every other version, visit the Jolly Boxes mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.
