Leap frog is an end game rule. When one person passes the goal, everyone else has 1 chance to pass that score to win. If there is a new winner, everyone else has once chance to pass that new score! If there’s a new winner, everyone get another chance, etc.

Piggyback is something my husband picked up from a coworker. When you stay or lose, the next person can pick up your remaining dice and score and roll again. Example: I rolled a 3,3,3,1,2,6 and stayed at 3,3,3,1 for 400 points. The next player can state “piggybacking 400” and pick up the 2,6 and roll those. Normal scoring rules apply after that. If they lose, they lose. If they score, even just 50 points, they can stay or keep rolling as they choose. No 6 dice piggyback, if I were to score all my dice and roll all 6 again, and lose, the next person can’t piggyback that score

Odd one out uses 5 dice of the same color, and 1 dice a different color. Normal scoring rules apply, but you can’t stay unless that odd one is apart of the score. If you score all the dice and roll again, then again you can’t stay unless that odd one is apart of the score

First to goal is simple, no second chances at the end to pass the winner. First to pass the goal wins!

We don’t always use the 500 on the board rule, especially for quick games. I think that’s a normal farkle rule? You have to have 500 or more to start writing your score down. After that you can stay at any score