For the game give everyone a run of cards from Ace to 10. The object is for the player to choose the highest unique number. All the players will choose a card and then reveal them all at the same time. The winner is the person who held up the highest number than no one else held up. Play as many rounds as you like.

Scoring is, as always, completely arbitrary, you can award as many points as you like to the winner. Decide how you wish based on the number of players.

You can go lowest unique number if you like, or switch part way through to try and catch some people.

If you have a lot of people you can up the range and have them write it instead of using cards.

I usually add a few additional rules, to keep people on their toes. For instance, if 3 people have the same number then I let them play another round immediately, just the three of them. If 2 people have the same number then they have to sit out the next full round.