Carl: No I thought of this one, I don't know if it even exist as an official Variant, but, if not, I'll be the proud inventor of it and Fencer has then a nice unique game on his great site :).

Cloning Gammon: (Players think twice before capturing a piece)

Standard Backgammon or Hyper Gammon rules (Cube can be used).
There are no Gammons or Backgammons.
Each time you hit an opponent's checker, you MAY add one extra checker of your color to your bar, marked with an X.(the destination place for your captured checkers). If no cube is used, you MUST add one piece to the bar. These extra pieces count as Race pieces, so you can bring them in anytime you want.
You can move freely with the extra checkers.(they will keep their markers as long as any of your normal (non-marked) pieces is still not in your home area, see next section)

Scoring:
You must have only your 15 normal (non marked) pieces in your home area your bear them out. You are still allowed to move marked (cloned) pieces, but, if you do, the piece will lose its marker and you must also put this piece in your home area. If no cube is used, you must put all pieces in your home area first.

If there is no cube, the winner is that player who bears all his or her pieces off, of course.

When the cube is used, each piece after the 15th (or 3rd if playing the Hyper Gammon rules) you bear off, will score you a point (duplicated with the number on the doubling cube). If any player bears his last piece off out his or her home area (regardless of other (marked) pieces on the board), the game ends and that player also gets two points.

This one is pretty fun to play, maybe there are still bugs in it. At least, the Gammon rules are now totally messed up. If you have suggestions, message me.

Reasons for editing: Removing spelling errors.