Observer.jar is a release file of the Minecraft mod Observer.jar for Forge, made for Minecraft 1.20.1. It was published on February 20, 2026 and is 3.2 MB in size. For the full description, screenshots and every other version, visit the Observer.jar mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.
