Oxygen 21w20a is an alpha file of the Minecraft mod Oxygen for Forge, made for Minecraft 1.16.5. It was published on May 19, 2021 and is 3.7 MB in size. Pre-release builds can contain bugs — back up your world before installing. For the full description, screenshots and every other version, visit the Oxygen mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.
