The Gates of Babylon slot from Kalamba has 40 winlines with a novel accumulation mechanic to win multiple spins with stacked wilds. During the base game of Gates of Babylon, when gold coin symbols land, they award a ruby for the reel on which they landed. When there are 3 rubies collected for any reel, the full reel becomes wild for 3 spins, with a chance to retrigger for more! The free spins features this same collection mechanic, but once a stacked wild is awarded it remains locked for all remaining spins, giving a chance to win one massive payout after another.
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