gunpowder-base-1.2.0.2+1.18.2.jar is a release file of the Minecraft mod Gunpowder for Fabric, made for Minecraft 1.18.2. It was published on April 29, 2022 and is 16.7 MB in size. For the full description, screenshots and every other version, visit the Gunpowder mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.