Extreme Reactors is the original port of the 1.7.10 mod Big Reactors, by Erogenous Beef, rewritten for MC 1.9.4 / 1.10.x / 1.11 / 1.12.2 and 1.16.3 / 1.16.4 / 1.16.5 / 1.17.1 / 1.18.1 / 1.18.2 / 1.19 / 1.19.1 / 1.19.2 / 1.20 / 1.20.1 / 1.21 / 1.21.1

A mod intended for other mod authors, it contains a revised multiblock API that support multiple client mods without performance penalities, a new new GUI system, a base BlockEntity implementation that simplifiy data syncronization and much more.