How to play Gin Rummy

A card game for two. Collect sets and runs, then knock to end the hand when you have few cards left over.

The rules, step by step

You and the computer are each dealt 10 cards. Your aim is to sort them into sets and runs.
A set is three or four cards of the same number, such as three 7s. A run is three or more cards in a row in the same suit, such as the 4, 5 and 6 of hearts. The ace counts as low, so it goes before the 2.
Each turn, take one card: either the face-up card from the discard pile, or the top card of the face-down pile. Then throw one card away on the discard pile.
The game sorts your cards for you and groups the sets and runs, so you can see what you have. Cards in no set or run are left over.
Left-over cards count against you: an ace is 1, the picture cards are 10, and the other cards are worth their number.
When your left-over cards add up to 10 or less, you can press Knock to end the hand. If you have none left over at all, that is called Gin.
The player with fewer points left over scores the difference. If you knock but the computer has the same or less, it scores instead, plus a bonus of 25.
When someone reaches the target score, the game ends.

Say you hold the 7 of hearts and the 7 of clubs, and the face-up card is the 7 of spades.

Take it. Now you have three 7s, which is a set. Then throw away your least useful card.

Choose Easy while you learn. Normal builds its hand more carefully.
Press Hint if you are not sure what to take or throw away.
Throw away high cards that are not part of anything. They cost the most if you are caught holding them.
You cannot throw back the card you have just picked up from the discard pile.
There is no timer. Take as long as you like.