JSTR Universal is a release file of the Minecraft resource pack John Smith Legacy - Modded, made for Minecraft 1.12.1, 1.12, 1.12.2, 1.12-Snapshot. It was published on March 6, 2019 and is 82.6 MB in size. For the full description, screenshots and every other version, visit the John Smith Legacy - Modded resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.
