Diablo Immortal designer Chris Burger“Diablo Immortal” senior designer Chris Burger.Blizzard Entertainment

“Is this an out of season April Fools joke?” was probably the last question that representatives from Blizzard Entertainment expected to hear at their company’s annual fan event, BlizzCon 2018. 

But that’s exactly the question they got from a fan during a question-and-answer session over the weekend about the new “Diablo” game, “Diablo Immortal,” a free-to-play game coming to smartphones.  

Lead designer Wyatt Cheng laughed it off as the massive crowd of attendees loudly applauded the question — a physical manifestation of the frustration many “Diablo” fans expressed over the new game. 

Online, the reaction was far worse.

“Has Diablo Immortal killed your hope for the future of Diablo?” reads one popular thread on the “Diablo” Reddit forum

And the backlash may have spooked Wall Street, too: For those keeping score at home, shares in Activision Blizzard were down almost 7% in trading on Monday. 

What in the world is going on? It’s complicated.