According to the number of players searching for it, Spirit of Mustang is not a very popular slot. Spirit of Mustang is an online video slot developed by Pariplay. Spirit of Mustang is a slot machine by PariPlay. This five-reel, three-row slot has up to 25 paylines, an RTP of between per cent and. One of the fourst four games in the Cash Stacks family is Mustang Spirit™. Spirit of Mustang is an online slot by Pariplay that features quite an unusual Wild West theme. When golden coins appear. . Enter the heat of the desert to fill the game's five reels with. This game includes multi-denomination options, on screen credit prizes and much. The Mustang Spirit Cash Stacks slot machine is a Native American-themed slot game by Ainsworth. With so many online slots to choose from. Can you keep up with these wild horses and reign in your own free spins jackpot? Unleash your wild side as you run through the Wild West prairies side by side with mighty steeds in the Spirit of Mustang slot from Pariplay. Stampede your way to a major prize in Spirit of Mustang, a 5-reel slot that'll have you galloping all the way to the bank. Get the winning action started with the Coin Collect feature. Spirit of Mustang. Spirit of Mustang is a 5-reel, 3-row slot packed with fantastic features. Run wild with Mustang Spirit, a new bonus-packed slot from Ainsworth.