Crystal Jewels Slot by Fazi

Line wins here pay in both directions. A combo can build from the leftmost reel rightward, the way nearly every slot works, but it also pays from the rightmost reel back toward the left, and the game settles the better of the two per direction. That doubles the ways a single screen of matching gems can connect, which is the main reason a win-both-ways layout like this hits more often than a plain left-to-right machine running the same symbols.

The crystal-encased "$" Wild is the piece that makes the game tick. It only ever appears on the middle three reels, and when one lands it spreads to fill that entire reel, then locks it in place and hands you a free respin of the other four. So a single Wild guarantees a held, fully wild column feeding both pay directions while everything around it spins again for a fresh shot at connecting. It's a tidy sticky-wild respin built into the base game rather than tucked behind a bonus.

And that base game is the whole game. No scatter, no free spins, no round to buy your way into. The reels carry a faceted red 7 on top, paying 25x for five, then a blue 7 at 12x, with brilliant-cut red, blue, purple, green and yellow jewels filling out the lower end, all sparking against a gold-and-purple sunburst.

What sits underneath are three mystery jackpots, Gold, Diamond and Platinum, fed by a slice of every spin and dropping at a hidden random point, with your odds scaling to how much you stake. A red-or-black gamble can double any win up to a 50,000 ceiling. For an older Fazi title with adjustable lines, the two-way pays plus the locking Wild give it more going on than its plain gem-slot looks suggest.