Just Enough IDs Mod 1.12.2 is a lightweight mod that removed the block, item, biome, potion, and enchantment ID limits by using the 1.13 chunk format in 1.12. More specifically, it uses a block state palette when saving chunks to NBT, and uses an int biome array rather than a byte biome array. There should be very few incompatibilities with other mods, but in case you find one, please report it to the issue tracker. Unlike NotEnoughIDs, removing a mod is supported, and won?t cause corruption of the worlds created with that mod. Extremely important: Removing Just Enough IDs Mod will break your world. It is equivalent to loading a 1.13 world in 1.12! JustEnoughIDs cannot load NotEnoughIDs worlds.