I've been designing games since 2000. The smallest projects I've worked on were one-man indie games on which I wrote every line of code and painted every frame of art. The largest was my four years as a level and systems designer on Irrational Games' 110-person development team making BioShock Infinite. I wrote the book Designing Games for O'Reilly Media. I'm currently working on RimWorld, a project for my independent studio Ludeon Studios.