The Recreation Deck Games
The recreation deck is shown several times in TMP. Decker demonstrates a few of the games in the room for the Ilia probe. But do we know what the games are called or what the object of each is? I don't remember seeing similar games at any other time during TOS or the other series. And the post-TMP novels I've read don't mention them.
"He clapped his captain—his friend—on the shoulder. Yes, this man was very much like James Kirk, in all the ways that mattered." --Christopher L. Bennett-- Star Trek: Mere Anarachy, The Darkness Drops Again