Fire Blaze: Oink Oink Oink Slot by Playtech

Three piggy banks - red, green, blue - sit chained to the left edge of the grid, each one a meter that fills as colored prize symbols land during base spins. Red prizes feed the red bank and eventually trigger Super Fire Blaze Hold & Respin, which doubles the grid from 5x3 to 5x6. Green prizes fill the green bank to award 8 free games. Blue prizes crack open a standard Fire Blaze Hold & Respin on the regular 5x3 layout. The banks fill independently across multiple spins, so progress carries forward until one breaks. During Hold & Respin rounds, prize symbols lock in place carrying values from 0.5x up to 100x your bet, and you get 3 respins that reset each time a new prize lands. Star icons wait until the round ends before transforming into Mini (20x), Minor (50x), or Major (500x) awards. Fill every position on the grid and you hit the Grand at 2,000x.

Free games add Vault symbols that work as mystery stacks - all Vaults on the reels crack open to reveal the same random symbol before wins calculate, and landing 6+ yellow prizes during the round still triggers the standard Hold & Respin. Retriggering costs another 3 scatters for 8 more spins. The colored prize symbols (red, green, blue) only appear in the base game, not during any bonus round, so the piggy bank meters are purely a base game collection loop.

Deep violet reels bordered in gold, with the three piggy banks rendered in a chunky, almost toy-like 3D style - the red one wears a crown, the green one grins, the blue one looks stoic. Premium symbols are gold bars, a stuffed wallet, a money bag, and a faceted gem, all oversized and metallic. Card royals from 10 through Ace come in a cool lavender that blends into the purple backdrop. The golden pig Wild is the same character from the game's branding, sitting on a pile of coins and substituting for everything except scatters and prize symbols.

No buy bonus, no ante bet. The whole game runs through that piggy bank collection loop, and since the three colored prizes share reel space with regular symbols and yellow prizes, filling any single bank takes time. The Super variant - the 5x6 expanded grid - is the premium trigger here, 30 positions to fill for Grand instead of 15, but also 30 positions worth of prize values adding up before the respins run dry.