Mongol Treasures Slot by Endorphina

Horses on the Steppe

Mongol Treasures fills its reels with horse breeds - black, grey, light brown, dark brown, and a white stallion that doubles as the Wild at 200x for five of a kind. The Mongolian warrior tops the paytable at 500x, and a Mongolian woman serves as the Scatter. Behind the grid, sand dunes and a traditional ger (yurt) sit under a wide sky. The soundtrack and visuals both hold up well for a 2015 release, with the open-steppe atmosphere coming through clearly.

Expanding Symbol Free Games

Three or more Scatters trigger 10 free games. At the start, one symbol is randomly selected as the special expanding symbol. During each free spin, if enough of that symbol lands anywhere on the reels to form a winning combination, it expands vertically to cover all three positions on its reel. Position doesn't matter for triggering the expansion - only the count.

The expanded symbols then pay on all active paylines, including non-adjacent positions. This breaks the standard left-to-right adjacent requirement, meaning scattered expanding symbols across reels 1, 3, and 5 still pay. That changes the math considerably compared to regular base game spins.

Wild symbols cannot substitute for the expanding symbol during free games. This prevents the Wild from trivializing the mechanic, but it also means some free spins where the chosen symbol barely appears feel thin.

Pick Your Expanding Symbol

The Bonus Pop buy feature adds a strategic twist. Instead of accepting a randomly chosen expanding symbol, you select which one becomes the expanding symbol for your bought free games. Choose the warrior at 500x base, and every expansion hits harder. Choose a lower-paying symbol, and expansions are more frequent but worth less per combination.

The cost scales with your bet and your chosen symbol - higher-value symbols cost more to select. This makes Mongol Treasures one of the few Endorphina slots where the buy bonus involves a genuine decision rather than just paying for access.

A Sequel Followed

Endorphina released Mongol Treasures 2: Archery Competition in 2022, replacing the expanding symbols with an archery-themed bonus where hitting targets earns multipliers up to 4,000x. The original remains the more mechanically interesting of the two - the expanding symbol system, especially with Bonus Pop selection, gives it more depth than most Endorphina games from the same era. High volatility and 10 adjustable paylines keep sessions spiky. Three progressive mystery jackpots round out the feature set.