The map Crystal Isles, formerly known as ISO: Crystal Isles, is a free, official, non-canonical DLC expansion map for ARK Survival Evolved.

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.

This map contains new creatures, biomes and unique environmental features.