ngsinan: Even if you remember cards for only one or two tricks, such a trick may be one or two weeks ago - while you may be playing 20 or 40 games in parallel.

Of course, it's not up to me to decide whether or not bridge should appear. But if it does, I doubt I'll play it. And that counts for most card games - they suffer from a similar problem: you need to be able to remember what cards have appeared. Some possible exceptions:

• Cribbage. Normally if you reach 30 the played cards are set aside, but here they could be shown somewhere on the board. (Cribbage is also a two player game...)
  
• UNO, with an "infinite" deck. (So, if dealing any dealt card has a change of 1/108, 2/108 or 4/108 of appearing)
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