"A lot of design decisions that end up having a big effect on the gameplay start as thematic decisions. [...] It's like in chess, how the knight is the only piece that jumps, and that just makes sense-- you're on a horse, and the horse can leap. Those kinds of links-- they're things that game developers think about a lot, and it's not just a bunch of abstract rules. It matters what the game is about story-wise, character-wise, et cetera."