The objective in gin rummy is to score points and reach 100, before your opponent does.
The basic game strategy is to improve one's hand by forming melds and eliminating deadwood. Gin has two types of meld: Sets of 3 or 4 cards sharing the same rank, e.g. 8♥ 8♦ 8♠; and runs of 3 or more cards in sequence, of the same suit. e.g. 3♥ 4♥ 5♥ or more. Deadwood cards are those not in any meld. In gin rummy aces are considered low and can form any set of aces but only the low end of runs (e.g. A♠ 2♠ 3♠ etc.). Q♠ K♠ A♠ is not a legal run in gin rummy. A player can form any combination of melds within their hand, whether it contains all sets, all runs, or both.
The deadwood count is the sum of the point values of the deadwood cards - aces are scored at 1 point, face cards at 10, and others according to their numerical values.
Dealership alternates from round to round. The dealer deals 10 cards to both players, and then places the next card in the deck face up. This begins the discard pile. The face down pile is known as the stock pile. On the first turn, the non-dealing player has first option of taking the upcard on the discard pile or passing. If the non-dealing player passes the upcard, the dealer is then given the opportunity to take the upcard or pass. If the dealer also passes, the non-dealing player must draw from the stock pile. Once the first upcard has been drawn into a player's hand or both players have passed it, subsequently each player may choose from which pile to draw.
On each turn, a player must: draw either the (up card) top card of the discard pile, or the (face-down) top card from the stock pile, and discard one card from his or her hand onto the discard pile.
Players alternate taking turns until one player ends the round by knocking, going Gin, or until only two cards remain in the stock pile, in which case the round ends in a draw and no points are awarded. The game ends when a player reaches 100 or more points.
A player may only knock if he has 10 or fewer points of deadwood. Knocking with 0 points of deadwood is known as going Gin.
To knock, the knocking player ends his turn by discarding as usual, announces that he is knocking , and lays his hand out with the melds clearly indicated and deadwood separated. The other ("defending") player is then entitled to lay out any melds in his or her hand and can then lay off any of his or her remaining deadwood cards that fit into the knocking player's melds, provided that the knocking player does not have a gin hand.
For example, the knocking player has a meld of three Kings. The defending player has a king as part of his deadwood. He can lay off that king, reducing his deadwood count by ten. The knocking player can never lay off his or her deadwood into the defending player's melds.
The knocking player then subtracts his deadwood points from the defending player's deadwood points. The result is the number of points the knocking player receives. An undercut occurs if a player knocks and the defending player's deadwood points are less or equal than the knocking player's. In this case the defending player receives an undercut bonus (25 points) plus the difference in deadwood points.
If all 10 or 11 cards in a player's hand fit into melds and thereby the player has no deadwood, player receives a Gin bonus of 25 points plus any deadwood points in the opponent's hand. The defending opponent can only lay out his or her melds and cannot lay off any deadwood into the melds of an opponent that has declared Gin. A player can go Gin with a hand of three or fewer melds as long as all cards fit into a meld.
Aces are scored at 1 point, face cards at 10, and all other cards are scored at their numerical values. Points are scored in Gin for the following:
No Flash, no Java needed or no install needed and no registration necessary. You can play it in any Browser your PC or mobile. If you play with computer it uses the best strategy, so to win you need some skill and luck. You can also ask for advice from the computer, so it can teach you how to win. High Score list is maintained on a Game Server.
More information related to Gin Rummy can be found at Wikipedia