opus-0.5.1.jar is a release file of the Minecraft mod Vaskars Opus - Faction War, Quests & Bosses for NeoForge, made for Minecraft 1.21.1. It was published on October 14, 2026 and is 26.9 MB in size. For the full description, screenshots and every other version, visit the Vaskars Opus - Faction War, Quests & Bosses mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.
