Remember those schoolyard rumors about a secret Mario level? Or that time your cousin told you they knew how to unlock Goro in MK1? Remember what it was like to play a game you didn't know everything about before it was released? In this multi-game documentary we talk to Jonathan Blow, Derek Yu and Jim Crawford about the challenge of retaining mystery & player discovery in the age of the internet. Plus we announce full Noclip documentaries for The Witness, Frog Fraction & Spelunky too. Buckle up friends, March is going to be busy!