What's Up With Playable Games?

There's only, there's a set of playable games, and it's large. The set is large, but there are commonalities within it. It isn't just relative what you decide to do. And that's why, commonalities, that's why morality has a common basis, fundamentally. That's partly what we're trying to investigate. What does up mean? What does it mean? Is there such a thing?"...