A drinking game you can enjoy anytime, anywhere, as long as you have soju bottle caps and friends
The soju bottle cap 'Up and Down' game, along with 'soju cap flicking,' is one of the easiest and most popular games to play at a drinking table. It's simple to play and lots of fun, and you can continue playing using the caps left over from the flicking game. - Difficulty: Easy - Players: 2 or more ※ If there are only two players, decide on a fixed number of guesses in advance. If the number isn't guessed within that limit, the other player drinks the penalty; if it is guessed within the limit, the one who knew the number drinks instead.
How to Play

1. Prepare the soju bottle caps and turn them over so the numbers inside cannot be seen. 2. Play rock-paper-scissors to choose who is 'it.' The 'it' checks the number inside their own cap alone, then cups it in their hand so other players can't see it. 3. Starting with the person to the left of the 'it' and moving clockwise, each player calls out a specific number between 1 and 50 that they guess is inside the cap. If the actual number is higher than the one called, the 'it' shouts 'Up'; if lower, 'Down.' The next player continues in the same way, narrowing down the range. 4. The person to the right of whoever correctly guesses the number becomes the one penalized, drinking a shot of soju, and then becomes the next 'it.'
Tips
1. The number inside the cap is usually somewhere between 1 and 50, so after checking it, it's a good idea for the 'it' to first decide on a starting range within 1–50. 2. Normally the 'it' doesn't drink, but some groups add variations such as 'if the number is guessed within X tries, the it drinks instead.'

