Tile-matching video game casual games, tile-matching games are designed to be easily accessible and easy to play, which conflicts with a traditional video gaming ethos that demands games to be challenging and punishing. Match-three games are NP-hard when generalized to an n × n playfield and played such that the player knows in advance all the tiles that will appear, with no random chance involved. In particular, it is NP-hard to determine: Tile-matching video game A tile-matching video game is a type of puzzle video game where the player manipulates tiles in order to make them disappear according to a matching criterion. In
Scrabble letter distributions the letters "B", "E", "N", "O", "P", "S", and "U". The letter "C" was reduced in value to 5 and the "X" was increased to 10: Circa 1961, the hyphen was dropped from the game's name, and the original Swedish distribution of the game had been restored. Sometime later, produced under BRIO's subsidiary, Joker, the number of "T"s in the set were reduced by one and an 8-point "Z" tile was added. In 2002, under the ownership of Mattel and its brand name Scrabble, the Swedish language set tile values of the "C" and "Z" were changed, respectively, to 8