"We're having to deal with six different versions, and we're trying to ensure that modifications that occur in one version are accurately recorded in the right place in the version we release later WOTLK Classic Gold. It's a challenge that we're trying to solve by writing down the changes and looking at which versions make more sense for utilize."

According to Birmingham Birmingham, maps in the game World of Warcraft maps are some of the most complicated components to convert. "[The World Mapsystem] changed drastically throughout the various patches" Birmingham stated "We designed all of these systems, and then they were later modified to make them more unified." The information from the maps from different eras in World of Warcraft are all different and streamlining them was a baffling task.

In the same way, spells have also been formatted , reformed and formatted many times over time, and ironically, Zierhut was the one who was responsible for most of the spell script formatting for retail World of Warcraft in the past. "And we're going to have to do it again!" he lamented.

"Now, now we've got an update to the Lich King version that never got fixed." Wrath of the Lich King was the first time that abilities had distinct spell scripts relating to the various challenges of spells but the ever-growing complexity the Warcraft engine meant that the code had to be re-written to function within Warcraft's game engine.

Wrath of the Lich King Classic will set class balance to the same level at the beginning of the expansion's duration the way it was in its previous releases. This will ensure that all classes, including the massively overpowered Death Knight hero class introduced in Wrath of the Lich King -- will work on their power levels intended for them.

One of the most difficult decisions World of Warcraft had to make was what to do with its old Classic servers. While it was developing Classic there were two types of players emerged buy WOW WOTLK Classic Gold. "There were people who wanted to go back and go through the expansions once more," Birmingham explained, "And another group of players desired the game as it was. We want to make sure that we keep our word to both of them."