The present invention is a device embodying a reel-based game. The reel-based game includes a plurality of reels and a plurality of mini-reels. The mini-reels replace one or more of the plurality of reels or may replace one or more symbol-bearing positions of the reels. The added feature of the plurality of mini-reels enables the possible attainment of a greater number of symbol combinations and winning outcomes by replacing standard paylines associated with the reel or reel position with sets of paylines that cover all mini-reel-based outcomes.