So you want the first episode of Telltale Games' upcoming Back to the Future game for free? Of course you do! If you head here and register on Telltale's website, they'll send you a redeemable key for the game.
You don't have to insert any payment details, but you do have to put in your address, and an email. The game is currently slated for a December release, and while it's easy to be cynical about a stunt like this, we think it's a great move by Telltale games - we'll play the first episode free, tell our friends about the game, and probably buy the rest of the episodes regardless. Everybody's happy.
My serial number is currently sitting in my inbox - will you guys be following suit?