Bethesda’s announced the original Wolfenstein 3D is now free-to-play as a browser game as part of the game’s 20th anniversary celebration. Grab it here. The Platinum Edition of 3D for iOS is also being offered for free for a limited time here, and the game is 75% off on Steam. You could also just go nuts and buy the Wolf Pack on Steam for $3.75 which includes Wolfenstein 3D, Spear of Destiny, and Return to Castle Wolfenstein, or the rather awesome Super id Software Pack which includes 20 id games for $49.99. Decisions, decisions.