EXCLUSIVE: Grindstone Entertainment has acquired all US rights to the action horror film formerly known as The Gauntlet.

Matt Eskandari directed Game Of Assassins, about five strangers who awaken in a medieval dungeon and must team together to make it out alive.

Bai Ling, Warren Kole and Dustin Nguyen of 21 Jump St star in the US-China co-production, which shot in Beijing.

Lionsgate Home Entertainment will release the US-China co-production on all media platforms.

Wellington Sun, Daniel Wei, Jonathan Shih, Matt Eskandari and Adam Lawson produced and Lawson wrote the screenplay.

“We were impressed by the production value of the film and its intricate and well told story,” said Grindstone Entertainment head of acquisitions Stan Wertlieb. “The filmmakers did a great job balancing action, suspense, and horror with unique real life-characters, something we are always on the lookout for in genre fare.”

Ryan Black and Wertlieb of Grindstone Entertainment brokered the deal with Patrick Ewald and Shaked Berenson of Epic Pictures on behalf of the producers.