This one really made me chuckle, and I admit even when I knew it was a April’s Fool, It left me drooling and pondering if it was actually a leaked Blizzard Worldwide Invitationals Diablo MMO Teaser. Looks so real. What game was it really from, no clue. But it looks stunning. The April’s Fool teaser has voice acting featuring Belial. (Source)
P.S.: Some of the scenes are reported to be from “Kingdom under Fire: Circle of Doom”. Thanks, HandClaw.