The game is commonly played in South Korea, Finland and The Netherlands.
When all players have been dealt their hands, one card is laid face-up in the middle of the table to form the discard pile, and the rest of the deck laid face-down beside it forming the stock pile.
After drawing because of attack, it is still that player's turn; they may play one or more of the cards that they have just drawn.
In The Netherlands their version of One-card, called Pesten, is played without shield-cards and often drop some rules to make it easier.
The Finnish variant (Yksi kortti) follows mostly the same rules as the South Korean game with the addition of allowing a player to play as many cards of the same value at once as one wishes, provided that the first card laid down is a valid answer to the card played by the previous player.