You can find details on multiplayer versions here: How do multiplayer games work?
You can open up a game round by clicking on the button ‘New Game’. You decide who is allowed to play on the table, how high the stakes are and the length of the game. Here you have the choice between 50, 100 and 150 points. Of course you can also join a round already opened by another player.
It will be shown on the right side of the table which player's turn it is, the remaining time to take your turn, the maximum number of points which were agreed and the stake and your credit. You have the possibility to chat with your fellow players through the chat function. In addition, an arrow indicates which player’s turn it is and a red exclamation mark when it’s you're go.
Before the game begins you choose between the game versions ‘Normal’ (Gin Rummy) and ‘Oklahoma’ (Oklahoma Gin).
Gin Rummy is played with a set of 52 cards. Each player is dealt 10 cards. The remaining cards are placed in the centre and the first card is dealt face up in a separate pile (to be the discard pile). When the game starts, the first player may reject the first face up card by clicking on the ‘Pass’ button. If the player rejects the card, the second player can decide whether he wants to take the card.
A player’s own cards are placed in front of the player on the playing table and the player name and the number of points each player has is displayed. A turn must always consist of taking and discarding a card of your choice. You can either take a card from the deck or the last discarded card. To do this you click on the desired pile and the top card is then placed in your own hand. To place one of your cards on the discard pile, you click on the desired card or drag it by drag & drop on to the discard pile.
You can always rearrange your cards, even if it’s another player’s turn. To do this you click on the respective card and drag them with the mouse to the desired location.
To knock (lay cards) you need combinations (sets or sequences) of at least 3 cards. A set consists of cards with the same value (e.g. three kings), a sequence of consecutive cards of the same suit (e.g.: 10 of hearts, jack of hearts, queen of hearts).
Knocking (Laying Cards)
The ‘Knock’ button is located in the middle of the game. If it’s your turn and the cards that you still hold in your hand after laying have a value less than or equal to 10, the ‘Knock’ button is activated, i.e. no longer greyed out. Then you can choose whether you would like to knock. A set or a sequence in your card is marked by a blue line on the appropriate card as soon as you have placed them in the appropriate order.
The cards laid are placed in the centre of the table. If a player has knocked and his opponent also has sets or sequences to lay, then the ‘Lay’ button is displayed for him. The second player can also lay his cards on the first player’s combinations (as long as they fit to the combination). If, for example, three sevens are lying in the middle of the table, you can lay the fourth seven, if you have it in hand. If you have laid all cards possible, you click on the 'Next’ button.
If the knocking player has no remaining cards in hand, then it is called a gin. The player gets a bonus for this and the opponent is still allowed to lay his cards, but not add any more cards to an opponent’s combinations.
Oklahoma Gin is a widespread, varied variant of Gin Rummy. The first card to be turned face up determines from how many points you are allowed to lay cards (e.g. a six means you are only allowed to knock with six points or less in your hand). If the first card is an ace, you can only knock with a ‘gin'. In addition, the remaining points are doubled if the first card is a spade.
End of the Game
A game is over when a player has knocked, and the second player has not laid any cards. A game is over when a player reaches the score pre-determined at the start of the game (50, 100 or 150 points).
Scoring / Points
The order of the cards is Ace, 2, 3, 4, 5, 6, 7, 8, 9, 10, jack, queen, king. To calculate the score, tens and face cards count as ten points, aces one point and the score cards 2 to 9 are their face value.
The cards that the players still have in their hand after knocking and laying are called ‘deadwood'. The values of ‘deadwood’ cards make up each player’s remaining points. The player with the fewest remaining points gets the points difference to the opponents’ remaining points credited as additional points.
Gin Bonus: With a gin, the knocking player receives a 25 bonus points.
Undercut Bonus: If the player who has not knocked, has less remaining points than the player who knocked, the player who had not knocked gets the difference of the remaining points credited, plus a 20 point bonus.
In the variation Oklahoma Gin, the remaining points are doubled if the first card was a spade. If the first card is an ace, you can only knock with a ‘gin'.