Mahjong tiles are a 19th-century invention based on three-suited money playing card decks, similar to the way in which Rummikub tiles were derived recently from modern Western playing cards. Since the 19th century some decks have been specially printed for certain games. Old Maid, Phase 10, Rook, and Uno are examples of games that can be played with one or more 52-card decks but are usually played with custom decks. Cards play an important role in board games like Risk and Monopoly.