@bandie It's Cloning Backgammon, which is just like regular Backgammon, except whenever you take an opponent's piece in addition to their piece getting sent back to the bar, /you/ also get a /new/ piece added to /yours/.
(And regular Backgammon is just a racing game, like the Royal Game of Ur or Ludo. You go around the board and try to get your pieces out.)
I thiiink unless other places call it something else, it miiight be unique to the site I play on, BrainKing.com.
This is a personal instance for Alex Daily and a few friends.