10 Video Game Sequels That Broke Canon

10. Warlocks Are Legal Again - World Of Warcraft

World of Warcraft is known to constantly retcon minor details regarding its universe. Some retcons can even have a pretty major impact on the game's story and characters, like the complete change of Aegwynn's personality, for example. However, even changes like this seem minor when compared to what Blizzard had to do with the canon of the original Warcraft series in order to incorporate it into their MMORPG sequel.

The story of Warcraft III ended with Thrall banishing all warlocks from the Horde for their dealings with demons and their crimes during the war. Given what Gul'dan had done in the game and the fact that Orcs used to be enslaved by demons, this decision seems to be a logical conclusion to the story.

However, in World of Warcraft, warlocks are somehow returned to the Horde without any mention of their banishment.

This is obviously because the game included the warlock class in its roster, and not allowing one side to use it would make WoW less fun to play. Still, this change in lore seriously undermines Thrall's accomplishments in Warcraft III and creates a confusing gap in the story.