I wonder what Wittgenstein would think about Calvin ball. Calvin ball is a game invented by Calvin of the Calvin and Hobbes comic. The only rule to Calvin ball is that there are no rules. What counts as a move in the game? Pretty much anything. But, is this a problem? If anything counts as a move, does nothing count? I'm inclined to say no. There are not conflicting rules or conflicting interpretations being appealed to. There aren't distinguishing rules being appealed to either. Wittgenstein would probably think that there is too little structure to the "game" for it to count as a game.