It is a 25 payline slot that has a free spin feature, and a wild symbol (the Mayan Queen) on reel 3 that expands to fill the entire reel and doubles all winning combinations.
Free spins are triggered by three or more scatter symbols landing on the reels during a single spin, the wild symbol also substitutes for the scatter. You are awarded with 6 free spins where the queen stays in her spot to make the third reel wild for all 6 spins, free spins can be retriggered and they often do since the wild is already there.
See the screenshots below for paytable information and one of my best hits on this slot.
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