A small variant: Every player gets one chip in the beginning, showing a number between 1 and 6. When its your turn of rolling the dice you may use your chip instead of the dice rolled. This is once per game only.
The first one to drop out gets 10 points extra, so is the last one.
(Note that I only know the version in Gamut of Games and I dont know if similar variants have been used in the commercial versions already)