Former Disney games chief unveils Day of Discord to tap into the $1.2 billion card game market

Graham Hopper had a portfolio of dozens of games when he ran the interactive gaming business at Disney. But today, he’s got a startup, Muti Labs, that’s betting its fortunes on a single free-to-play mobile card game: Days of Discord.

Graham Hopper of Muti Labs.
Graham Hopper of Muti Labs.

The Santa Monica, Calif.-based company is unveiling its first game today as it prepares to launch its beta test for the free-to-play title. It’s another example of a team shooting for hardcore gamers on mobile, which is expected to become a growing part of the worldwide $30 billion mobile game market. And card games like Hearthstone have become a $1.2 billion market of their own.

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Dean Takahashi

Dean Takahashi is editorial director for GamesBeat. He has been a tech journalist since 1988, and he has covered games as a beat since 1996. He was lead writer for GamesBeat at VentureBeat from 2008 to April 2025. Prior to that, he wrote for the San Jose Mercury News, the Red Herring, the Wall Street Journal, the Los Angeles Times, and the Dallas Times-Herald. He is the author of two books, "Opening the Xbox" and "The Xbox 360 Uncloaked." He organizes the annual GamesBeat Next, GamesBeat Summit and GamesBeat Insider Series: Hollywood and Games conferences and is a frequent speaker at gaming and tech events. He lives in the San Francisco Bay Area.