Gin Rummy

Elwood T. Baker invented Gin Rummy in 1909 in New York, and his son helped him refine the rules before it became a fixture of American card tables in the 1930s. The game distills rummy into a tight two-player duel: you draw, discard, and arrange ten cards into melds until your unmatched cards total 10 points or fewer. Then you knock. A 2019 study in the journal Frontiers in Psychology found that card games requiring working memory and pattern recognition help maintain cognitive flexibility in older adults. Gin Rummy exercises exactly those skills. You track suits, count ranks, and calculate deadwood under time pressure. Start a game in your browser right now and test your hand against the CPU.

1. Each player receives 10 cards from a standard 52-card deck. The remaining cards form the stock pile, and the top card is turned face up to start the discard pile.
2. On your turn, draw one card from either the stock pile or the top of the discard pile.
3. After drawing, discard one card from your hand face up onto the discard pile. You must always hold exactly 10 cards at the end of your turn.
4. Arrange your cards into melds: sets of 3 or 4 cards of the same rank, or runs of 3 or more consecutive cards in the same suit.
5. When the total point value of your unmatched cards (deadwood) is 10 or fewer, you can knock to end the round. If you have zero deadwood, you can call Gin.
6. The round ends when someone knocks or the stock pile runs out. Scores are calculated based on the difference in deadwood between the two players.

• Gin Rummy uses one standard 52-card deck. Aces are low (1 point), face cards are worth 10 points, and number cards count their face value.
• A set is 3 or 4 cards of the same rank, such as 7 of hearts, 7 of clubs, and 7 of spades.
• A run is 3 or more consecutive cards of the same suit, such as 4, 5, and 6 of diamonds. Ace is always low, so A-2-3 is valid but Q-K-A is not.
• You may knock only when your deadwood totals 10 points or fewer. Going Gin means all 10 cards form complete melds with zero deadwood.
• If you knock and your opponent has equal or lower deadwood, the opponent undercuts you and scores the difference plus a 25-point bonus.
• Going Gin awards you the opponent's total deadwood plus a 25-point bonus. The opponent cannot lay off cards against a Gin hand.
• The first player to reach 100 points wins the game.

• Track the discard pile closely. Every card your opponent discards tells you what suits and ranks they are avoiding, which helps you guess their melds.
• Hold middle cards (5, 6, 7) longer than edge cards. A 6 can participate in more potential runs (4-5-6, 5-6-7, 6-7-8) than a King, which can only extend a run downward.
• Avoid drawing from the discard pile early in the round unless the card clearly completes a meld. Taking a discard reveals information to your opponent about your hand.
• Knock as early as possible when your deadwood is low. Waiting for Gin gives your opponent more draws to reduce their own deadwood and set up an undercut.
• When you are close to knocking, discard cards that are unlikely to help your opponent. High cards (face cards, 10s) are safer to discard late because they carry high deadwood value and are harder to build runs around.

• Oklahoma Gin: The value of the first upcard determines the maximum deadwood allowed for knocking. If the first upcard is a 2, you can only knock with 2 or fewer points. If it is an Ace, you must go Gin.
• Straight Gin: No knocking allowed. You must go Gin (zero deadwood) to end the round. This version rewards patience and aggressive meld-building.
• Cribbage: Another two-player card game with melds and scoring, but adds a crib, pegging, and a pegboard. If you enjoy the hand-management side of Gin Rummy, Cribbage adds an extra layer of arithmetic.

• Each round takes only a few minutes, making it easy to fit into a short break.
• The game rewards memory and observation as much as luck. Tracking discards gives skilled players a real edge.
• Knocking early versus waiting for Gin creates constant tension and risk-reward decisions.
• The undercut rule means no lead feels safe until the round actually ends.

Play Gin Rummy directly in your browser. No download or registration required. Choose from Easy, Medium, and Hard CPU difficulty. The game tracks your score across multiple rounds until someone reaches 100 points. Sort your hand by melds, suits, or rank with one click. The deadwood counter updates live so you always know when you can knock. Works smoothly on desktop, tablet, and phone.

Gin Rummy packs deep strategy into a fast two-player format. Every draw and discard carries information. Every knock is a calculated risk. Whether you prefer the patience of building toward Gin or the aggression of early knocking, the game rewards observation and memory as much as the cards you are dealt. Deal a hand and start playing now.

• Gin Rummy - Wikipedia
• Card games and cognitive flexibility in older adults - Frontiers in Psychology (2019)