Last updated: 2026-05-11
Quick take: Best for players who want a small, focused catalog of mobile-first slots from a licensed UK-founded studio — quality over quantity, with high volatility across most titles.
Silverback Gaming launched in 2019. The company was founded in the UK and runs its development team from Sofia, Bulgaria. It holds a UK Gambling Commission licence and distributes games through Relax Gaming's Silver Bullet Platform. In December 2021, GAN Limited acquired Silverback, expanding its reach into regulated North American markets.
The portfolio is intentionally lean — around seven to eight titles, released at a pace of two or three per year. All games run on HTML5 and work on desktop, Android, and iOS with no separate app required. The studio does not offer jackpot slots.
Most Silverback slots sit at 95% RTP or just above, which is below the 96% industry average. Volatility tends to run medium-high to extreme, meaning wins come less often but can be larger when they land.
Popular Silverback Gaming Slots
- Golden Calaveras — Day of the Dead theme, 96.43% RTP, extreme volatility, x50,000 max win
- Wilds of the West — Western outlaw theme, 6 reels, 4,096 ways to win, 95.97% RTP, x5,000 max win
- Tiki Bonanza — Tropical theme, 5 reels, 243–3,125 ways, 95.63% RTP, x5,000 max win
- Mystery Stacks Deluxe — 5 reels, 10 paylines, 95.52% RTP, x1,000 max win, released October 2023
- Mystery Stacks — Fruit theme, mystery symbol stacks, 95% RTP, x500 max win
- Aztec Luck — Aztec temple theme, book mechanic with expanding symbol, 95% RTP, x5,000 max win
Golden Calaveras is the studio's standout title — extreme volatility and a x50,000 ceiling make it by far the biggest swinger in the range. Tiki Bonanza grows its reel grid from three rows to five during the bonus, pushing ways to win from 243 up to 3,125. Wilds of the West uses six reels and 4,096 ways across a western outlaw theme.
Mystery Stacks and Mystery Stacks Deluxe both use stacking mystery symbols that reveal a matching icon to fill the stack and build wins. The Deluxe version adds a bonus wheel, wilds with multipliers, and free spins with additional spins layered on top. Aztec Luck follows a book mechanic — one symbol is chosen at random to expand across all reels during free spins.
Silverback's first major industry step was a 2020 distribution deal with Relax Gaming, putting its early titles in front of Relax's operator network. The GAN acquisition in 2021 broadened that reach, particularly for US-facing casinos as more states opened regulated online gambling. All games are RNG-tested by independent third parties.
Further reading: BeGambleAware resources, Gambling Commission guidance
All Silverback Gaming Slots
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Tiki Bonanza
Mystery Stacks Deluxe
Mystery Stacks
Golden Calaveras