Gin rummy is a fast, head-to-head card game built around sorting your hand into tidy groups and shedding the leftovers before your opponent does. It uses a single 52-card deck, rewards a sharp memory and careful discarding, and can be learned in a few minutes — yet it takes far longer to master. This guide walks New Zealand players through every rule you need: the deal, drawing and discarding, knocking, going gin, laying off, and exactly how the scoring and bonuses build toward a 100-point game.
Quick Facts
| Players | 2 |
| Deck | Standard 52 cards, no jokers |
| Cards dealt | 10 to each player |
| Card values | Ace 1, number cards face value, J/Q/K 10 each |
| Objective | Form sets and runs; keep deadwood low |
| Knock at | 10 deadwood points or fewer |
| Game ends | First player to 100 points |
| Type | Draw-and-discard, two-player |
Understanding the setup and objective
Gin rummy is played by two people with a standard 52-card deck and no jokers. The aim of each round is to arrange your cards into melds — valid groups — while keeping the value of your unmatched cards (called deadwood) as low as possible. A meld is either a set of three or four cards of the same rank (such as three Queens) or a run of three or more consecutive cards in the same suit (such as the 4, 5 and 6 of hearts). Aces are always low, so A-2-3 is a legal run but Q-K-A is not.
Gin rummy emerged in the early 1900s as a quicker, two-player version of standard rummy, and it is still one of the most popular ways to get a full game out of a single deck. Unlike basic rummy, you do not lay your melds on the table during play. You keep everything hidden in your hand until someone ends the round, which keeps your progress secret and makes reading your opponent part of the fun. If you want a refresher on the wider family these games belong to, our guide on how to play rummy covers the shared basics.
Dealing and the opening upcard
The dealer shuffles and deals ten cards to each player, one at a time. The next card — the 21st — is turned face up beside the remaining deck to start the discard pile; the face-down deck becomes the stock.
The non-dealer gets the first chance to take that face-up upcard. If they pass, the dealer may take it instead. If both decline, the non-dealer begins normal play by drawing the top card of the stock. From then on, players alternate turns, and the winner of a hand usually deals the next one.
Choosing the first dealer: before the opening hand, each player draws a card from the shuffled pack, and whoever draws the lower card deals first.
Taking your turn: drawing and discarding
Every turn has two steps: draw one card, then discard one card. You may draw either the top card of the stock (hidden) or the top card of the discard pile (which your opponent can already see). You then end your turn by placing one card face up on the discard pile.
You cannot take a card from the discard pile and immediately throw that same card back. Picking from the discard pile is a handy shortcut, but it signals exactly what you are collecting, so experienced players use it sparingly.
| Phase | What you do | Why it matters |
|---|---|---|
| Draw | Take the top stock card or the top discard | Build toward sets and runs; drawing the discard reveals what you are collecting |
| Arrange | Sort your ten cards into melds and deadwood | Keep track of your lowest possible unmatched total |
| Discard | Place one unwanted card face up | Shed high-value deadwood without feeding your opponent |
| End | Knock or go gin | Lock in the round while your hand is strong |
A worked example of a turn
Suppose you are dealt the 5, 6 and 7 of clubs, three 9s, the King and Queen of hearts, the 2 of spades and the 4 of diamonds. The 5-6-7 of clubs is a run and the three 9s are a set, so eight of your ten cards are already melded. Your deadwood is the King and Queen of hearts, the 2 of spades and the 4 of diamonds — worth 10 + 10 + 2 + 4 = 26 points.
Your plan is now clear. You want to shed those high hearts to pull your deadwood down toward the 10-point knocking threshold, while hoping to draw a card that helps. The Jack of hearts would be ideal, because J-Q-K of hearts forms a run and turns 20 points of deadwood into a meld. Drawing another low card instead lets you knock sooner by discarding a King.
Card values and deadwood
Card values are simple. Aces are worth 1 point, number cards are worth their face value, and the Jack, Queen and King are worth 10 points each. These values only matter for the cards left over as deadwood at the end of a round — cards inside a meld count for nothing against you.
Because face cards and tens carry the most weight, most players try to meld or discard them early. Holding three unmatched Kings, for example, means 30 points of deadwood if your opponent suddenly ends the round.
Ending the round: knocking and going gin
A round ends when one player knocks or goes gin.
You may knock once your deadwood totals 10 points or less. To knock, you discard one final card face down and lay your hand on the table, grouped into melds and deadwood. Knocking is optional — you are never forced to end the round just because you can.
Going gin means every one of your ten cards forms part of a meld, leaving zero deadwood. Gin is the strongest finish: your opponent cannot reduce their score against it, and you collect a bonus plus all of their deadwood.
Laying off after a knock
If a player knocks (but has not gone gin), the defender gets one more advantage before scoring: laying off. The defender may add their own unmatched cards to the knocker’s melds. If the knocker shows three 8s and you hold the fourth 8, you can lay it off there and erase those points from your deadwood. You can also extend a run — adding the 7 of spades to the knocker’s 8-9-10 of spades, for instance.
Lay-offs only work one way: the knocker cannot lay cards onto the defender’s hand, and nobody can lay off against a gin hand. That one-way rule is a big reason gin is worth chasing.
The undercut
An undercut happens when the knocker did not go gin and the defender’s deadwood ends up equal to or lower than the knocker’s. Instead of the knocker scoring, the defender wins the round and takes a bonus (commonly 10 points) plus the difference between the two totals. A well-timed undercut can swing the momentum of a match, which is why knocking with a borderline count late in a round is risky.
When the stock runs low
A round does not always end with a knock or gin. If play continues until only two cards remain in the stock and the player who drew the third-to-last card discards without ending the round, the hand is declared dead. No points are scored, and the same dealer reshuffles and deals again. Because of this, a player who can see they are unlikely to win will sometimes play defensively to run the stock down and force a dead hand rather than hand their opponent a score.
Scoring, bonuses and winning the game
When a round ends, both players total their deadwood and score as follows. If the knocker has the lower count, they score the difference between the two totals. Going gin earns a bonus of 20 points (many casual and online versions use 25) plus the full value of the opponent’s deadwood. An undercut gives the defender a 10-point bonus plus the difference.
Play continues, round after round, until one player reaches 100 points. That player receives a 100-point game bonus — doubled to 200 under some house rules if the opponent never scored a single point. Many players also add a 20-point “box” (or “line”) bonus for each individual hand won; these boxes are tallied only at the very end and do not count toward reaching 100 during play. Agree on which bonuses you are using before you start, since the exact numbers vary by region and table.
| Outcome | Points scored | Notes |
|---|---|---|
| Knock (lower deadwood) | Difference between the two deadwood totals | The standard way to win a round |
| Gin (no deadwood) | 20-point bonus + opponent’s full deadwood | Opponent cannot lay off any cards |
| Big Gin (all 11 cards meld) | Larger bonus (often about 31) + opponent’s deadwood | No discard and no lay-offs allowed |
| Undercut | 10-point bonus + the difference | Defender ties or beats the knocker |
| Each hand won (box) | 20 points per box | Added at the end; not counted toward 100 during play |
| Winning the game | 100-point game bonus | First to 100; doubled in some rules if the opponent scored nothing |
Popular variations
Several well-known variants change the pace or the maths:
- Oklahoma Gin: the value of the opening upcard sets the maximum deadwood you may knock with that round. If the upcard is a 5, you can only knock with 5 points or less; if it is an ace, you must go gin.
- Big Gin: if you draw an eleventh card that completes your entire hand, you declare Big Gin without discarding. It usually pays a larger bonus (commonly around 31 points) plus the opponent’s deadwood.
- Hollywood scoring: a method of tracking three games at once on the same scorepad, popular for longer sessions.
If you enjoy two-handed play, you might also like our broader guide to two-player card games, the rummy cousin Rummy 500 (where both players score melds on the table), or the longer rummy-family game Canasta.
Common mistakes beginners make
A handful of habits cost new players points more often than any shortage of luck:
- Hoarding high cards too long in the hope of completing a meld, then getting caught with heavy deadwood when the opponent knocks.
- Taking cards from the discard pile too freely and advertising exactly what you are building.
- Knocking the instant you can, rather than weighing an undercut once your opponent has had time to shed deadwood.
- Forgetting that melded aces are harmless, but unmatched face cards and tens are expensive.
For more on timing, reading your opponent and when to push for gin rather than knock, the strategy tips below go a little deeper.
Simple strategy tips to lower your deadwood
Once the rules are second nature, a few habits will win you more rounds without any extra luck:
- Swap high deadwood for low. Even when a drawn card does not complete a meld, take it if it lets you throw away something heavier — trading a King for a 3 trims seven points off your count and brings a knock within reach.
- Value double-duty cards. A card that could finish two different melds — say the 7 of hearts sitting beside both the 6 of hearts and the 7 of spades — is worth holding until you see which meld lands first.
- Track the live cards. A card is “live” while it has not appeared in the discard pile or your own hand. If you are waiting on a card and both of its mates are already discarded, that meld is as good as dead, so change plans early.
- Discard defensively. When two cards are equally useless to you, throw the one less likely to help your opponent, and avoid feeding cards next to whatever they have just drawn from the discard pile.
- Knock or chase gin? Knocking with low deadwood wins more hands over a long session. Save the gin chase for when you need only one card and that card is still live.
How gin rummy compares to other scoring card games
Gin rummy sits in a group of two-player games where the real skill is in steadily building a score across many short rounds rather than winning a single dramatic hand. Its deadwood-penalty system rewards tidy, efficient play: the lower your unmatched cards, the safer you are. If you enjoy that running-tally style, cribbage works in a similar spirit, using a pegging board to race to a target score — our guide to crib (cribbage) walks through its scoring. The main thing that sets gin rummy apart is the hidden-hand tension: because nobody lays melds down mid-round, every discard is a small gamble about what your opponent is quietly assembling.
Key Points
- Two players, one 52-card deck, ten cards dealt to each.
- Form sets (same rank) and runs (same suit, in sequence); aces are always low.
- On your turn, draw one card from the stock or discard pile, then discard one.
- Knock with 10 or fewer deadwood points, or go gin with zero deadwood.
- Gin pays a bonus plus the opponent’s deadwood and blocks lay-offs; an undercut rewards a defender who ties or beats the knocker.
- The first player to reach 100 points wins the game.
Sources
Frequently asked questions (FAQ)
How many cards do you deal in gin rummy?
Each player receives ten cards, dealt one at a time from a single 52-card deck. The 21st card is turned face up to start the discard pile and the rest form the stock.
What deadwood count do you need to knock?
You may knock when your unmatched cards total 10 points or less. Knocking is optional, and you discard one card face down as part of the knock.
What is the difference between gin and Big Gin?
Gin means melding all ten cards in your hand with no deadwood. Big Gin means melding all eleven cards — including the card you just drew — so you end the hand without discarding and earn a larger bonus.
Can the knocker lay off cards on the defender?
No. Only the defender may lay off unmatched cards onto the knocker’s melds, and no lay-offs are allowed at all when a player goes gin.
How do you win the whole game?
The first player to reach a cumulative total of 100 points across multiple rounds wins, then adds the game bonus and any box bonuses to settle the final score.
Can you play gin rummy with more than two players?
Standard gin rummy is designed for exactly two players, and mechanics like knocking, laying off and the undercut only work head-to-head. For three or more people, a broader rummy variant that lets everyone score is the better choice.
Are aces high or low in gin rummy?
Aces are always low. An ace is worth 1 point as deadwood and can only sit at the bottom of a run, so A-2-3 of a suit is a legal run but Q-K-A is not.
