You've probably heard of a new game popular allegedly among roulette players.
Well, maybe even more popular among drinking buddies.
The rules are simple - spin the wheel, drop the ball in and wait for the result. The glasses around the wheel are numbered, and filled with all sort of drinks, in one variant, and only with one kind, in another. The principle is the same; you have to drink from the glass with your number.
Since there are more numbers on the wheel, the glasses are numbered with more numbers.
You can play the game in different ways; for example, you can play until all the glasses are empty, or you can refill them; or you can use different drinks, maybe even something not so drinkable.
The game is designed for 2-8 players, as you can see it is very simple. The basic thing is to be old enough to be allowed to drink and clever enough not to sit behind the wheel of your car after playing.