BrainKing is going to launch this new game variant (I post this in permission to Fencer). (If you don't believe, ask Fencer:)).

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

Standard Backgammon (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)

The maximum number of extra checkers is 5.

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 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 one point not multiplied by the cube.

Maybe there are still bugs in it. If you have suggestions, message me or Fencer.