ICBM - Classic 1.12.2-4.0.0b74-UNSTABLE build 74 is an alpha file of the Minecraft mod ICBM - Interconnected Block Missiles for Forge, made for Minecraft 1.12.2. It was published on March 4, 2020 and is 6.4 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 ICBM - Interconnected Block Missiles mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.