A tile-based video game, or grid-based video game, is a type of video game where the playing area consists of small square (or, much less often, rectangular, parallelogram, or hexagonal) graphic images referred to as tiles laid out in a grid. That the screen is made of such tiles is a technical distinction, and may not be obvious to people playing the game. The complete set of tiles available for use in a playing area is called a tileset. Tile-based games usually simulate a top-down, side view, or 2.5D view of the playing area, and are almost always two-dimensional.
Much video game hardware from the late 1970s through the mid-1990s has native support for displaying tiled screens with little interaction from the CPU.