rtc-2.3.9-neoforge-1.21.1.jar is a release file of the Minecraft mod Real Time Chemistry 2 [RTC2] for NeoForge, made for Minecraft 1.21.1. It was published on June 16, 2026 and is 152.7 MB in size. For the full description, screenshots and every other version, visit the Real Time Chemistry 2 [RTC2] mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.
