Mighty stallion plays in the backdrop of a dessert with a beautiful sunset. On the reels, you will find 9 – A's card deck symbols followed by Mountains an eagle, bull horns, and the Mighty Stallion which is the wild symbol. Now the wild symbol does not appear in general but as a base game feature.
During any base game spins you will notice the reels spinning dark and a full-screen wild symbol spinning across the reels. It can be a full screen colossal, 3x3, or 2x2 colossal symbol. Once the wild symbol lands, the reels stop spinning, and the wild substitute for all other symbols.
If you managed to land 5 fire coin symbols on reels 1, 2, 3, 4, and 5 in the same spin you trigger the hold and win feature. You basically get 3 lives and the reels re-spin hoping to land more coin symbols. When another coin symbol land, the life counter is reset to 3. This feature ends when no more coin symbol lands and all lives are lost.
Landing 3 Stallation scatter symbols on the reels trigger the free spins feature. Now the horses land on reels 2 and 4 as stacked symbols. When it lands on 1 or both reels, the multipliers kick in. If you managed to land on both reels the stacked horse you can benefit from a multiplier up to x100 the winning combination. Obviously landing only on 1 reel has a lower multiplier value.
Now the reason big wins can occur in free spins is that the lowest symbol which is 9 can easily give you x1000 win with x100 multipliers. Three of a kind 9 symbols awards you x1 your total bet, now imagine hitting premium symbols. Winnings can be insane.
I haven't had much luck during free spins only the hold and spin feature where I bagged well over x100 wins.