Tonight I played a single-player game. I bet the game that the last bus out of Oxford was at 11:30pm. It turns out that it was at 11:00pm. So I lost. The taxi driver got GBP30 more than he otherwise would have done that night (or so I assume - I guess he could have made GBP30 in the time it took to drive me up to Bicester but probably not), but he wasn't involved in the initial bet so I don't think he can be considered a winner (because he's not a player).
This is the essence of "player versus game." It doesn't require AIs for the player to be pitted against; it's playing against the system. More people need to understand that than currently understand that.
Also, I've had about four pints and the keys on my keyboard feel kinda funny. Or maybe it's my hands.