Unofficial Fork of "Iris", made to work with FML
this mod requires beddium mod here is the download: https://www.curseforge.com/minecraft/mc-mods/beddium
but there is no release for 1.21.1 but here is an archived version but i contacted the dev and he said he will republish it https://github.com/peaksuperior885/Thorbedium/releases
