'Mojam' was a 60 hour Gamejam which basically means there aim was to create a game within 60 hours and others were welcome to join them. Before the event began you could tell it was going to special because Mojang allowed their fan-base to decide on the theme and genre of the game, which of course is very risky on the Internet (especially when one genre is "Peter Molyneux"). Oddly enough the fan-base chose the real time strategy genre and the theme of steampunk...good luck Mojang.
The reason this is impressive is because they couldn't even plan any aspect of the game beforehand because they only just found out what the games genre was hours before. The first night of the stream contained a party like atmosphere as they slowly began working on the project. By the second day they had decided on a name "Catacomb Snatch" which was of course followed by "Thats what she said" and "lolwat" because lets face it... it does kinda sound like a euphemism.
