otherstages-1.0.0.jar is a release file of the Minecraft mod Other Stage for Forge, made for Minecraft 1.20.1. It was published on September 21, 2025 and is 0.2 MB in size. For the full description, screenshots and every other version, visit the Other Stage mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.