"Graven is Hexen 3—kind of," 3D Realms chief Frederik Schreiber told me during a recent preview session. It's the game that Raven Software would've made in 1998, if 1998 was now.

Graven’s peasantry are almost Monty Python-esque in the sheer scale of their evident suffering, and the town and surrounding swampland are deliciously moody, dripping with grime, grunge, and ...