This is a 5 volume 3 line 20 pay line video slot from 3win8. The treasure chest symbol is Scatter, replacing all symbols. When 3 or more of them appear, you will trigger a free spin bonus. You will initially win 10 free spins using Mystery Scatter, which can be retriggered indefinitely. Mystery Scatter converts another random symbol to Scatter. Finally, in the game's gambling function, you must choose a card with a value higher than the dealer card shown. In addition to the optional collection, you can choose to gamble all or half of the bonus in each round.