Scrabble of points for each lettered tile is based on the letter's frequency in standard English; commonly used letters such as vowels are worth one point, while less common letters score higher, with Q and Z each worth 10 points. The game also has two blank tiles that are unmarked and carry no point value. The blank tiles can be used as substitutes for any letter; once laid on the board, however, the choice is fixed. Other language sets use different letter set distributions with different point values. Tiles are usually made of wood or plastic and are square and thick,
Tile-based video game Much video game hardware from the late 1970s through the mid 1990s had native support for displaying tiled screens with little interaction from the CPU. Tile-based games are not a distinct video game genre; rather, the term refers to the technology a game engine uses for its visual representation. For example, "Ultima III" is a role-playing video game and "Civilization" is a turn-based strategy game, but both use tile-based graphic engines. Tile-based engines allow developers to create large, complex gameworlds efficiently and with relatively few art assets. Tile-based video games usually use a texture atlas for performance reasons. They also