To commemorate the big two-oh years since its release, Bethesda has offered up the full Wolfenstein 3D experience to play for free in your web browser. Not only that, you'll also be able to play the id original on iOS devices gratis (at least for today) and creator John Carmack has decided to offer us a director's commentary on the game's development while shooting his way through a few levels. Watch, nod and reminisce right after the break, then hit up the source to play for yourself.