Rack-O

Sequential matching card game

Rack O is a Milton Bradley sequential matching card game with the objective of obtaining 10 numbers, in numerical order, in one's hand. Score may be kept on a separate piece of paper, based upon either a custom system or the system provided in the rule book. Rack O allows between 2–4 players, and is recommended for players age 8 and up. Rack O was released in 1956 and is currently produced by Winning Moves Games USA.

The deck consists of 60 cards, each containing a number from 1 to 60. Depending on how many people are playing, the deck may be reduced in size. If two people are playing, only the cards from 1 to 40 are used; if three people are playing, the cards from 1 to 50 are used; and if four people are playing, the entire deck is used. Each player has a rack containing 10 slots to hold their cards. A dealer shuffles the cards and deals 10 to each player. A player must place each card as it is received into the highest available slot in their rack, starting at slot #10, without rearranging any of them. The goal of each hand is to create a sequence of numbers in ascending order, starting at slot #1. The top card of the deck is turned over to start the discard pile. A player takes a turn by taking the top card from either the deck or the discard pile, then discarding one from their rack and inserting the new card in its place. A player who draws the top card from the deck may immediately discard it; however, when a player takes the top discard, they must put it in their rack and discard a different one. The first player to get 10 cards in ascending order calls "Rack O!" and wins the hand.

Games included Rack O in its top 100 games of 1986, saying, "For two players, we recommend that each use two racks simultaneously, arranging cards in either of them on a turn."