Consider what we call "games". Board games, ball games, patience, ring-a-ring-a-roses. What is common to them all? Competition? Patience has none. Skill? Not in dice. Winning and losing? Not for the child throwing a ball against a wall. Look — really look — and you will not find one thread running through them all, only many fibres overlapping, as in a rope. We call them all games not because they share an essence but because they share a family's face. Do not ask what this site essentially is. Ask what can be played here.