DynamX-4.2.0-beta.jar is a release file of the Minecraft mod DynamX Physics Mod for Forge, made for Minecraft 1.12.2. It was published on August 10, 2025 and is 4.3 MB in size. For the full description, screenshots and every other version, visit the DynamX Physics Mod mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.