Karuta is a Japanese card game originating from Portugal. Most of the karuta games use e-awase cards.
The basic idea of any e-awase karuta game is to be able to quickly determine which card out of an array of cards is required and then to grab the card before it is grabbed by an opponent. The two types of e-awase karuta decks that are most often seen are the uta-garuta and iroha-karuta. In uta-garuta, players try to find the last two lines of a waka given the first three lines. It is often possible to identify a poem by its first one or two syllables. The poems for this game are taken from the Ogura Hyakunin Isshu and are traditionally played on New Year's Day.