■Basic rules■
- Two to five players will lower the cards one by one in order.
- The first person to put down all the cards wins.
- At this time, the cards that can be put down can only be the same shape or the same number of cards as the cards that were previously put down.
- If you do not have a card to put down, take one card from the deck.
- If you have more than a certain number of cards, you will go bankrupt.
- You can set the number of people, the number of start/bankruptcy cards, etc. in the game settings menu.

■Attack card■
- Force a certain amount of cards to the next opponent.
- Attack cards have a cumulative effect.
- Attack cards can be fought back with the same or higher attack cards.
(The effects are 2 < A < ♠ A ♠ Black Joker < Color Joker order.)
◎ 2: Take 2 cards.
◎ A: Take 3 cards.
◎ Spade A, Black Joker: Take 5 cards.
◎ Color Joker: Take 7 cards.

■Special Card■
- ◎ 3: Disable 2 card attacks.
- ◎ 7: You can change the shape you want.
- ◎ J : Skip the turn once.
- ◎ Q: Reverse the direction of the game.
- ◎ K: Give one more card.

* All card decks are random.
* In the case of One Card, there are countless local rules by region, so please understand that it is difficult to accept all the rules.