mega_showdown 1.5.1+1.7.1+1.21.1-b-hotfix is a beta file of the Minecraft mod Cobblemon: Mega Showdown for Fabric, made for Minecraft 1.21.1. It was published on December 30, 2025 and is 15.3 MB in size. Pre-release builds can contain bugs — back up your world before installing. For the full description, screenshots and every other version, visit the Cobblemon: Mega Showdown mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.
