Heroes of Terrinoth is a cooperative fantasy quest card game from Fantasy Flight Games and designed by Brady and Adam Sadler, who created the cooperative Warhammer Quest. The Adventure Card Game that Fantasy Flight released in 2015 and then took off sale in 2017 when its licensing deal for Warhammer came to an end. Yep: this is Warhammer Quest with all traces of Warhammer scrubbed off it.
How different is it. The action has been relocated from the Old World to Terrinoth, a fantasy setting so bland that its most remarkable feature is how utterly unremarkable it is.