O1 3.0 is a release file of the Minecraft resource pack SECR O1 class for Immersive Railroading, made for Minecraft 1.14.4, 1.16.5, 1.10.2, 1.15.2, 1.7.10, 1.11.2, 1.12.2. It was published on December 24, 2022 and is 24.3 MB in size. For the full description, screenshots and every other version, visit the SECR O1 class for Immersive Railroading resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.
