Free Crystal Mystery slot allows you to explore the unrecognized temples of the Aztec civilization. You just need to find the secret signs to discover the lost treasures. This slot game is powered with 5 reels and 10 paylines.
There are nine symbols in this slot machine out of which major icons are sun, moon, pyramid, golden mask and fierce Aztec warrior. The crystal skull is the key to the temple where treasures are kept hidden. Three or more scattered crystal skulls appearing at any positions on reels offer 10 free games. Before free games begin, you will be taken near an ancient stone wheel where all icons are carved. The wheel spins in order to provide you a mystic icon. If the selected symbol appears during free spins, it will expand and pay on all lines. The crystal skull also acts as the wild symbol to substitute for other icons to offer more payouts.