The gaming system, gaming device and method provides a reel game that includes stacks of symbols configured on the reels to provide a large number of winning symbol combinations. The gaming device includes a plurality of reels wherein each reel includes a reel-strip and a plurality of symbols. Each of the plurality of reels is configured to include one or more stacks of symbols wherein a stack of symbols is formed by placing a plurality of identical symbols adjacent to each other on a single reel. If two non-adjacent reels each generated a stack of identical symbols and at least one reel positioned between the two non-adjacent reels generated symbols different from the symbols used to form the stack of identical symbols, at least one symbol on the at least one reel positioned between the two non-adjacent reels is modified into the symbol that forms the stacks of identical symbols.