Whenever I play a game with someone new, we quickly realize we have to clarify the rules we’re using beforehand, since so many people have their own varieties. What are some non-standard game rules that you/your family/friends follow?
I’ll start. My family has a rule where we’re not allowed to win on a Wild card. It adds a bit of challenge, and keeps someone from being unbeatable if they play by hoarding wild cards.


I play by challenge and double down/jump in rules.
Challenge rule: if the person plays a wild and the next player decides to challenge it, the person being challenged shows their hand to the next person in line, and if there was another card that could have been played instead, The person who played the card has to either draw two cards, or if it was a wild draw four, they draw the cards instead. However they were wrong, then they draw the penalty cards (so if it was a draw 4 they draw 6, and a standard wild they draw 2)
stacking/double down/jump in: If any player has a card that is identical to the current revealed card, they can jump in, and play that card as long as the next player has not started playing their turn. When a player jumps in, the turn order starts as if they had just had a turn, so it would be the next person from their position. If the card was a card that required a player to draw, the effect of the original card is cancelled, unless the player jumping in was the player that would have received the cards, in which case the effect is stacked and given to the next player(so a draw 4 becomes a draw 8), This effect can continuously be stacked as long as someone else doesn’t jump in or the person doesn’t have an identical card to continue stacking.