In a gaming
machine including a symbol region where reels having symbols are arranged in predetermined arrangement, so that the symbols are displayed in an arranged manner in longitudinal and transverse directions, there are provided a reel
control unit that independently controls movement and stop of each of the reels, such that the symbols appearing in the symbol region change and a winning determination unit that determines whether the symbols appearing on a valid line set to span the reels form a predetermined winning pattern, when each of the reels is stopped,
layers are set in the symbol region, and in the gaming
machine, at least one reel is disposed in each layer, a symbol group is provided in at least one specific reel arranged in a specific layer of the
layers in such a manner that symbols capable of forming at least portion of the winning pattern are arranged in the symbol group, at least one of the symbols capable of forming at least portion of the winning pattern overlaps the other reel in the other layer different from the specific layer, and that the symbol group move integrally with the specific reel, the symbols that are disposed in the symbol group in the specific reel can be viewed from a player, and when the symbol group is stopped on the valid line, the winning determination unit make the symbols disposed in the symbol group be included in a determination target and determines whether the winning pattern is formed.