my_first_mod-1.0.0-neoforge-1.21.1.jar is a beta file of the Minecraft mod Monsterwalll's Bosses And Stuff for NeoForge, made for Minecraft 1.21.1. It was published on April 3, 2026 and is 5.4 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 Monsterwalll's Bosses And Stuff mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.
