About Oopsie, from BoardGameGeek:
Oopsie is a brilliantly chaotic party card game that's quick to learn and quick to mess up. You'll face a flow of bizarre rules that lead everyone to act ridiculously. Remember your own rules and pay attention. The aim is to be the first to call out others when they make mistakes.
Can you keep up?
When it's your turn, draw a card and read the rule out loud. Then place it in your card holder, facing away from you. The rule is now in effect, and only the other players are allowed to look at it. You must remember and follow the rule until you, or another player, wins the card.
You win others' cards by being the first to call out "Oopsie!" when you catch them breaking their rule. You can win your own card if you manage to exceed the maximum of five rules at a time. The player who wins the most cards wins the game.
-description from the designer
