Mongol Treasures
EndorphinaExpanding symbols · Free spins

A 5×3 slot with 10 paylines where the Book is both scatter and wild. Three or more books start 10 free games with one special expanding symbol chosen at random, which expands to three positions after regular payouts when a win is present and pays on non-adjacent positions.
Facts checked against developer information · 2026-11-04Shared features, different experiences. Find the connection that matters to you.
Expanding symbols · Free spins
Expanding symbols · Free spins
Expanding symbols · Free spins
Expanding symbols · Free spins
Expanding symbols · Free spins
Expanding symbols · Free spins
Expanding symbols · Free spins
Expanding symbols · Free spins
Scores compare known attributes. They are not ratings, win probabilities or promises of the same experience.

Expanding symbols · Free spins
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Expanding symbols · Free spins
setting

Expanding symbols · Free spins
setting
A 5×3 slot with 10 paylines where the Book is both scatter and wild. Three or more books start 10 free games with one special expanding symbol chosen at random, which expands to three positions after regular payouts when a win is present and pays on non-adjacent positions.
Selected symbols can expand across reels under the game’s feature rules.
A triggered feature awards spins without an additional stake for each spin. Entry rules differ by game.
Source: Endorphina game information ↗. Details can vary by version and market; check the rules of the game you open.
Demo credits have no cash value. Free-play outcomes do not predict real-money results. Availability depends on your location.