1Draw a card, then discard one, to build sets and runs.
2Cards that fit no set or run are deadwood.
3Knock when your deadwood totals 10 or less; with none at all it's gin, worth a bonus.
4After a knock, the lower deadwood count wins the hand.
Questions
Form melds with your cards and minimize deadwood. Reach the target score (usually 100 points) over multiple rounds. Scoring: Knocker scores the difference in deadwood (or opponent scores if undercut). Gin bonus: +25 points. Undercut bonus: +25 points. First to 100 points wins.
Standard 52-card deck, typically for 2 players. Deal 10 cards each. Place the deck face-down. Turn the top card face-up to start the discard pile. Non-dealer may take the face-up card or pass to the dealer.
Keep your deadwood low - high cards are risky if your opponent knocks. Watch what your opponent discards to guess their melds. Don't discard cards your opponent recently picked up from the discard pile.
Oklahoma Gin: First upcard determines the maximum knock value. Hollywood Gin: Scoring on three separate games simultaneously. Gin Rummy 500: First to 500 points with different scoring.