Younger gamers may not understand this, but Diablo, like Metroid and Castlevania, was one of those first-in-class games that defined a genre. It further built on the loot-based RPG formula in the second game, which is considered among one of the best games ever made. Sure, there was a slight dip with Diablo 3, but long-time fans are happy with what they've seen in the Diablo 4 beta test.

While there are certain elements of the upcoming game that many fans are still sceptical about, it looks like Diablo 4 will be a return to form to the series that fans worshipped. It seems Blizzard is aware of this, and has perhaps decided to double down by setting up the Cathedral of Diablo. Finally, a dedicated place of worship for fans of the series.

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The Cathedral of Diablo is a promotional exhibit within the Chapelle des Jésuites, Place du Saint-Sépulcre in Cambrai, France from May 6 – June 11 (thanks, PCGamesN). Of course, the cathedral has been deconsecrated for a while, else it would have been a bit harder to promote a game that's literally about demons and hell.

The main attraction of the Cathedral of Diablo are the paintings within, which tell of “the hero’s journey in their confrontation with Lilith.” The project is led by artist Adam Miller as well as Diablo 4 art director John Mueller. The impressive spectacle is made out of several canvas paintings that have been stuck on the cathedral's roof, reminiscent of the Sistine Chapel.

The team covered 2,400 square feet of canvas with paintings depicting characters and events from Diablo 4, in the series' characteristic gothic style. The entire thing was set up in one month, which is an impressive feat for such a large scale project. Perhaps there was some divine intervention; Tyrael always seemed like the sort that paints.

Cathedral of Diablo Lilith

While four games may not seem like a lot, Blizzard has put a lot of work into the story and lore of the Diablo series. Characters who appeared in the very first game appeared in Diablo 3, and may even show up in the upcoming entry. But, for all its detailed lore, it seems Blizzard didn't really record it in the best way possible. This has resulted in some devs having to transcribe the first two games by hand.

"What I've found when it comes to creative sessions is the word no, or being 'lore police' as it were, usually doesn't help the creative process," said Diablo senior manager of lore Sean Copeland. "We want to make sure that we give [writers] the suggestions to make their story work, because at the end of the day, we're all trying to tell cool stories."

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