In December 2010, Fundex sold its license rights to Phase 10 to Mattel. Phase 10 was Fundex's best selling product, selling over 62,600,000 units as of 2016, making it the 2nd best-selling commercial card game behind Mattel's Uno. Whoever is in the lead when play stops if someone has completed 5.5 phases or more is the winner. Many people shorten the game by aligning it to baseball rules and consider 5.5 phases to be a complete game when running out of time to complete the full ten phases. The game is named after the ten phases (or melds) that a player must advance through in order to win. It consists of a special deck equivalent to two regular decks of cards, and can be played by two to six people. Phase 10 is based on a variant of rummy known as contract rummy.

Phase 10 is a card game created in 1982 by Kenneth Johnson and sold by Mattel, which purchased the rights from Fundex Games in 2010. Saving important cards knowing when to put down those cards matching, ordering

Cards used in Phase 10 (original version with colored Wild and Skip cards)

Phase 10 dice