A friend of mine has a rather precocious daughter with poor impulse control, and asked if I knew any behavior games that encourage children to think out the consequences of actions before they do them.
I'm familiar with the Good Behavior Game and the like, but standard conditioning hasn't been very effective with this child in the past. She's quite clever about subverting rules when possible, and shutting down entirely when subversion fails.
Please, one suggestion per thread so that the karma thing can do its thing.
It might be absolutely fantastic, except for the fact that you get it -wrong- so much of the time. You have to be adequately skilled at anticipating consequences in order for chess to teach you that you should. If you're pretty poor at guessing what somebody will do (or if your opponents are sufficiently unpredictable), it can easily teach you the opposite; don't bother wasting time planning things that won't happen.