99% of fandom, geekery, otakudom, etc. is information.
One secret of building a geeky career is realizing that most of what we love – and thus what we want to do – relates to information. Games on video and video games, fiction in text or animation, movies or films. It's all encoded, processed, delivered, and shot into our brains.
So if you're looking for a geeky job, there's a good chance it's entirely or partially about the creation, delivery, and access of information-heavy resources. A video game on DLC is no different in this way than the latest song downloaded from a band.
I realized that there are three sides of information delivery: The Information itself, the Creation (and alteration) of information, and the Transmission of information. In examining the career to turn your fandom into payday, ask yourself which of the three (or all?) are you on?