Theory of Fun Chapters 6-12
Although the first chunk of Theory of Fun was devoted the authors that games are a series of puzzles and exist to abstract real-world patterns of current or former use, the final chapters were more philosophical and talked about how games grow as their own artistic medium and what the means for the ethics of game development. For my purposes there wasn’t a lot of useful information for my current projects (which are not games, just reminiscent of them.
Still, it’s a highly interesting read that I would recommend.