The Aether II - 1.21.8-alpha.1-neoforge is a beta file of the Minecraft mod The Aether II for NeoForge, made for Minecraft 1.21.8. It was published on March 1, 2026 and is 75.4 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 The Aether II mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.
