[[Spanish release date::| ]][[Spanish Sneak Peek date::| ]] [[English release date::| ]] Legacy of Darkness is a Booster Pack, which is an amalgamation of the Japanese sets Struggle of Chaos and Mythological Age. Legacy of Darkness has been released in the Yu-Gi-Oh! Trading Card Game (TCG) in English and in the Yu-Gi-Oh! Official Card Game (OCG) in Asian-English and Korean. This pack was later reprinted in Master Collection Volume 1 to include "EN" in its Set Number, along with several other packs.