Hi Tom, Did you make any progress on your Dominion quest? I guess you could start by modeling `Big Money' and add the other cards (and interaction) from there. Also I guess there is a common baseline of things that are inherent in a lot of card games --- mechanics that cards support: Shuffling, having two sides, hiding one of two sides, picking a random card from a subset (or at least one where you can only see one side), placing cards in constellations on a table (with one side up). I guess with a bit of type system trickery you can even make sure that strategies don't look at the sides of the cards they are not supposed to look at --- without having to do any other information hiding like only providing access by getter functions. Matthias.