Gamers who purchased Telltale's new adventure game The Wolf Among Us directly from Telltale can't play the game - why? Telltale's servers are busy or down, and the online DRM won't let them register the game. So, they're stuck with a game they can't play.
Maybe the studio should have paid closer attention to what happened with Diablo III and SimCity and their server issues preventing people from playing. (Of course, SimCity is going offline soon.)