2.5.37 is a release file of the Minecraft mod Heroes United: Core, made for Minecraft 1.16.5. It was published on August 31, 2021 and is 5.5 MB in size. For the full description, screenshots and every other version, visit the Heroes United: Core mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.
