Numble multiple of 3) A zero is allowed at each end and duplicate digits are allowed (except for having more than one zero at either end). The following is valid; 0,2,3,6,7,0 but not 0,0,2,3,6,7 or 2,3,6,7,0,0. 1,1,3,6,7 is ok too. Each tile is worth its digit's value in points. A blank could be placed anywhere and, unlike in Scrabble, did not count as a particular digit, so the same blank tile could, for example, be between 3 and 4 in a horizontal sequence and between 8 and 9 in a vertical one. (This is used to get the extra points from
Tile-based video game store metadata about the tiles, such as collision, damage, and entities, either with a 2-dimensional array mapping the tiles, or a second texture atlas mirroring the visual one but coding metadata by colour. This approach allows for simple, visual map data, letting level designers create entire worlds with a tile reference sheet and perhaps a text editor, a paint program, or a simple level editor (many older games included the editor in the game). Examples of tile-based game engine/IDEs include RPG Maker, , Construct, Godot, and Tiled. Variations include level data using "material tiles" that are procedurally transformed into the