Thunderbolt Core 2.0.3-beta2 (neoforge 1.21.1) is a beta file of the Minecraft mod Thunderbolt Core for NeoForge, made for Minecraft 1.21.1. It was published on October 9, 2026 and is 4.9 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 Thunderbolt Core mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.
