One of the biggest hurdles to overcome for Wrath of the Lich King Classic is its code. Consolidating all the information of WOTLK Classic Gold, Wrath of the Lich King, and retail World of Warcraft into a complete experience is a complicated endeavor. According to Birmingham it is necessary to import the code to Vanilla World of Warcraft, Burning Crusade, and Wrath of the Lich King and connecting it with previous and present Classic and retail World of Warcraft versions.

"We're dealing with six distinct version formats and trying to make sure the modifications that occur in one format are and appropriately reflected in the version we'll release in the future. This is a problem we're trying to solve by documenting the changes , and then contemplating which version would make the most sense to use."

According to Birmingham Birmingham, game's World of Warcraft maps are one of the most difficult components to convert. "[The world map] system changed significantly through various patches," Birmingham said "We created all of these systems, then changed them later to make them more unified." The information from the maps of various eras from World of Warcraft are all different, and streamlining it was a surprise challenge.

Similar to spells, they have been formatted and rewritten several times over the years and, ironically enough, Zierhut was the one who did most of the formatting of spell scripts for the retail version of World of Warcraft in the past. "And we'll need to do it all again!" he lamented.

"Now you can play an update to the Lich King version that never got changed." Wrath of the Lich King was the first instance of abilities having unique spell scripts attached to spells of various difficulty, however the ever-growing complexity of the Warcraft engine meant that the code had being rewritten in order to work within an engine in the game.

Wrath of the Lich King Classic will bring the balance of the class back to what it was at the close of the expansion's time, like it did in its previous releases cheap WOW WOTLK Classic Gold. This means that all the classes -- especially the overpowered and wildly powerful Death Knight hero class introduced in Wrath of the Lich King -- will operate on the power levels they were intended to operate on.