Big It Up: Ruby Riot Slot by Light & Wonder

Picture a cartoon imp grinning on the reels while a giant ruby gem hovers above the grid, pulsing against a fiery red backdrop laced with gold infinity-loop light streaks. That floating gem is the whole reason this game exists. It's the Persistent Ruby indicator, and watching it grow is what separates Big It Up: Ruby Riot from every other devil-themed L&W release.

Here's how the Ruby mechanic works. Each Ruby symbol that lands on the reels carries a stake-multiplier value, and the game uses 19 discrete values - 1x, 2x, 3x, 4x, 5x, 6x, 8x, 10x, 12x, 14x, 16x, 18x, 20x, 30x, 40x, 50x, 60x, 80x and 100x. Rubies stick. When another Ruby drops, it merges into the existing one and adds its cash value to the pot. Stack enough of them and the Ruby Delivers - paying out the accumulated total in one hit. There's no jackpot ladder here; the top prize gets delivered through this single growing symbol, which is why a 10,000x ceiling is even possible on what looks like a modest 5x3 cabinet.

The bonus side runs on Bonus Rubies. Hit 3, 4 or 5 of them and free spins trigger, with retriggers landing through the same scatter mechanic during the feature. Don't want to wait? Buy Pass hands you direct entry at a cost tied to your current stake, and it randomly awards 3, 4 or 5 triggering symbols on the way in - so a Buy Pass purchase that lands 5 Bonus Rubies gives you a much fatter free spins package than one that lands 3.

Two extras round things out. A Gamble button offers a 5x red/black or suit guess on any win, which is pure UK arcade heritage showing through. And a Premium Play toggle sits in the bottom-left, an opt-in enhanced mode that boosts feature frequency for a higher per-spin price. The bet range tells the same story - $0.10 to $10 is narrow by Light & Wonder's usual standards, scaled for pub cabinet players rather than premium stake hunters.

The little red imp character hauling a money sack is the highest-paying regular symbol, surrounded by silver coin stacks, small ruby clusters, and card royals (J gold, Q purple, K blue, A gold, 10 green) styled like classic UK fruit machine pips. Wins announce through four tiers - Big Win, Super Win, Mega Win, then Epic Win at the top end. Hit Epic Win on a fully-grown Ruby Delivers and you've found the 10,000x.