This video just appeared on gametrailer and the description said "Notch created this dungeon crawler in 48 hours!".

Yep, he livestreamed him making it. Watched some of it and it was interesting to see someone work so fast.

Yeah that's real, i watched him do it like last weekend, it was really cool

This sort of thing is nothing new. It's cool that most of the games developed in these super short timespans end up being more rewarding to me than the average 60$ retail release

Watch this, it's pretty good: http://www.rockpapershotgun.com/2010/04/20/sid-meier-and-the-48-hour-game/

You can play it over at his blog. It's pretty fun kind of like a mixture between an old school rpg and legend of zelda.

@MrXD: He created it as part of Ludum Dare, a 48-hour game creation competition. He has competed in it at least once prior to this in which he made a puzzle platformer where you played as a guy with a that shot out little guys. It was very fun as well.

It's cool that most of the games developed in these super short timespans end up being more rewarding to me than the average 60$ retail release

Lol yeah. I believe that was part of a 48 hr coding contest where you release your source code at the end. It's a neat little game. I've been trying to code a game using the same libraries. It's been a few weeks, and I'm still not anywhere near complete.