Love Triple Triad and Chocobo Hot and Cold. Honestly Hot and Cold would be easier to implement prior to 2.0 than TT would. Instance a garden area and let the NPC "rent" us a Chocobo, build up from there. For TT, I think playing NPCs is the way to go unless you have an arena setting. Not sure how two people standing in the street playing would work. Maybe have a hall where you sit, it says "Waiting for opponent..." and when the other person sits in front of you it starts the battle. I'm trying to think how the mechanics would work.