1.4 is a release file of the Minecraft mod Phoenix's Fission for Forge, made for Minecraft 1.20.1. It was published on February 2, 2026 and is 13.3 MB in size. For the full description, screenshots and every other version, visit the Phoenix's Fission mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.
