'Minecraft' certainly became a huge hit, and people are telling me it's changed games. I never meant for it to do either. It's certainly flattering, and to gradually get thrust into some kind of public spotlight is interesting.

Facebook is not a company of grass-roots tech enthusiasts. Facebook is not a game tech company. Facebook has a history of caring about building user numbers, and nothing but building user numbers.

I used to be really stressed about that: like, how do I follow up on 'Minecraft,' because I have this weird expectation to. But after a while, what I realized I enjoy doing is prototyping and playing with ideas.

'Minecraft' is to a large degree about having unique experiences that nobody else has had. The levels are randomly generated, and you can build anything you want to build yourself.

I first wore a hat after seeing a friend wear a hat. It seemed like a neat way to keep snow off my head without having to wear a beanie, so I tried it on for a while. Turns out I started wearing the hat at around the time people took pictures of me and put them online and in newspapers, so it kind of became part of my public image.