No Special Rules. Put them in the cards.
No editing others' cards. Suggest changes on their talk pages.
Corner values and changing background colours are optional.
If you have an -ion, your opponent must surrender an Action card
If you have an Act, your opponent must surrender an Action card.
Play Rock-Paper-Scissors. The loser takes one card from everyone and also one from the draw pile.
Discard 3 cards from your hand.
Running After the Bus
Take an extra turn after this one.
Take one of your opponent's cards and use it.
Action: Draw a card.
When Downside-Up is in play, you can use this card. If it is already in play, it is unplayable. When this is in play, all players must hold up their decks and put down their cards upside down.
When Upside-Down is in play, you can use this card. If it is not, it is unplayable. When this is in play, the Upside-Down function is unabled.