The map Crystal Isles, formerly known as ISO: Crystal Isles, is a free, official, non-canonical DLC expansion map for ARK: Survival Evolved. It was originally developed by Isolde Gaming, Lillian, and iSPEZZ.
This is the 1st Free DLC Map to have an original boss as opposed to reusing old bosses, the Crystal Wyvern Queen.
Crystal Isles, at 150 square km, is nearly the same size as The Island, Scorched Earth, and The Center put together. (Added up they are 154 square km) and larger than Ragnarok (144 square km), although Ragnarok likely has more land mass (unconfirmed)
Lost Island has the same size but it's more of an underwater adventure and Crystal Isles has more land mass due to the floating islands.
Crystal Isles is the second mod map to bring a new Artifact. The first is The Center
There were originally Liquid, Crystal, Phantom, Zombie and Grand creatures on this map when it was still a mod.