Spinboss
Spinboss slots make up the bulk of a library of 36,000+ titles from studios such as NetEnt, Microgaming, Pragmatic Play and Evolution Gaming. Below you will find the main slot types, the providers, the jackpot option, live and instant games, and how to compare RTP and volatility before you spin.
Contents
Slot Categories in the Game Lobby
The casino lists 36,000+ games, and most of them are slots. Sorting spinboss slots by mechanic is quicker than scrolling the whole catalogue, because the mechanic tells you how a game plays far better than its theme does. The groups below cover the titles most UK players look for first.
Scatter-pays and cluster slots
These games drop the usual paylines. Sweet Bonanza is a candy-themed 6x5 slot with pay-anywhere wins, tumbling reels and multiplier bombs, and its listed maximum win is 21,100x. Gates of Olympus uses the same pay-anywhere idea with Zeus dropping random multiplier orbs.
Sugar Rush and Reactoonz are cluster-pays slots on 7x7 grids. Both are high volatility, so expect quiet stretches broken by occasional bigger hits.
Classic and Egyptian-style slots
Starburst is the gentle option: low volatility, 10 paylines, wins in both directions, expanding wilds and re-spins. If you want more risk, Book of Dead and Legacy of Dead from Play'n GO offer free spins with an expanding symbol and a gamble feature, both at high volatility.
Eye of Horus adds wild upgrades during free spins at medium volatility. Rainbow Riches is the long-running UK favourite, with its Pot of Gold, Wishing Well and Road to Riches bonus rounds.
Megaways and fishing slots
Bonanza is the original Megaways slot, with cascading reels and an unlimited free spin multiplier. Fishing fans can choose Big Bass Bonanza, Big Bass Splash or the older Fishin' Frenzy, all built around a fisherman wild that collects cash fish during free spins.
| Game | Provider | RTP | Volatility | Max win |
|---|---|---|---|---|
| Starburst | NetEnt | 96.09% | low | 500x |
| Book of Dead | Play'n GO | 96.21% | high | 5,000x |
| Big Bass Bonanza | Pragmatic Play | 96.71% | high | 2,100x |
| Big Bass Splash | Pragmatic Play | 96.71% | high | 5,000x |
| Sweet Bonanza | Pragmatic Play | 96.48% | high | 21,100x |
| Gates of Olympus | Pragmatic Play | 96.50% | high | 5,000x |
| Sugar Rush | Pragmatic Play | 96.50% | high | 5,000x |
| Rainbow Riches | Light & Wonder (Barcrest) | — | medium | — |
| Fishin' Frenzy | Blueprint Gaming | — | — | — |
| Mega Moolah | Games Global (Microgaming) | 88.12% | medium | — |
| Bonanza | Big Time Gaming | 96.00% | high | 26,000x |
| Gonzo's Quest | NetEnt | 95.97% | medium | 2,500x |
Game Providers Behind the Library
The studios named for the casino are NetEnt, Microgaming, Evolution Gaming and Pragmatic Play. The games featured in this guide also include releases from Play'n GO, Blueprint Gaming, Big Time Gaming, Hacksaw Gaming and Spribe. Here is what each studio is known for.
- NetEnt: Starburst and Gonzo's Quest, two long-standing slots with avalanche reels and expanding wilds.
- Microgaming: the Mega Moolah progressive jackpot, released under the Games Global name.
- Pragmatic Play: Sweet Bonanza, Gates of Olympus, Sugar Rush, both Big Bass slots and the Spaceman crash game.
- Evolution Gaming: the live dealer tables and game shows.
- Play'n GO, Blueprint, Big Time Gaming, Hacksaw and Spribe: Book of Dead, Eye of Horus, Bonanza, Wanted Dead or a Wild and the Aviator, Mines and Plinko titles.
Provider choice matters because each studio has a recognisable style. Pragmatic Play leans on multipliers and free spins, Hacksaw on very high volatility, and Spribe on quick instant rounds. For the wider picture of the site, see the full casino review.
Jackpot Slots
The jackpot title to know is Mega Moolah, an African safari slot with a four-tier progressive jackpot. The jackpot is triggered through a wheel bonus, and the free spins carry a 3x multiplier. It is known for record-breaking network jackpots, because the prize pool is shared across many casinos.
The trade-off is the base game. Mega Moolah lists an RTP of 88.12%, well below the mid-96% range of most slots in this guide. In plain terms, you pay for the chance at a life-changing prize with weaker everyday returns.
A progressive jackpot is a long shot by design. Set a spending limit before you start, and do not raise stakes to chase a loss.
If you prefer big-win potential without a progressive pool, the high-volatility slots above, such as Bonanza at 26,000x or Wanted Dead or a Wild at 12,500x, list much higher maximum wins than most classics.
Table, Card and Instant Games
Beyond reels, spinboss casino games include live dealer content from Evolution Gaming, plus crash and instant formats. The live side is covered in depth on the live casino page, so here is just the short version.
Live tables and game shows
Lightning Roulette is single-zero roulette where random numbers receive big multipliers, and it lists an RTP of 97.30%. For something less traditional there are Crazy Time, Monopoly Live, Mega Ball and Deal or No Deal Live, all hosted by a presenter and driven by wheels, draws or bonus rounds.
Crash and instant games
Aviator and Spaceman are crash games: a multiplier climbs and you must cash out before it ends. Mines and Plinko are instant games, where you pick a risk level or grid setup and get a result straight away.
Aviator and Mines both list a 97.00% RTP. These formats are fast, so the pace can burn through a balance quicker than a slot does.
Free Spins Eligible Slots
Two different things share the name free spins. The first is a feature inside the game itself, such as the rounds in Book of Dead or Big Bass Bonanza. The second is bonus spins credited to your account by the casino.
The welcome package pairs a 400% match up to €/£15,000 with 400 free spins and carries 40x wagering. A weekly reload also gives 70 free spins. Which slots those spins can be used on is set in the offer terms, so check the list on the bonus page before you claim rather than assuming a favourite will count.
Wagering contribution can also differ by game type. Slots usually count more fully than live or table games, but the exact rules sit in the terms.
Read which slots the spins cover first, then pick the game. Doing it the other way round is how people waste them.
Finding Games by RTP and Volatility
What RTP tells you
RTP is the share of stakes a game is designed to return over a very large number of spins. It is a long-run average, not a promise for one session. Operators can sometimes run different RTP versions of the same game, so check the info panel inside the game.
What volatility tells you
Volatility describes how wins are spread. Low volatility means frequent smaller wins, while high volatility means longer dry spells and bigger peaks. The table shows figures from our game data; a blank means no figure is available for that slot.
| Slot | Provider | RTP | Volatility |
|---|---|---|---|
| Starburst | NetEnt | 96.09% | Low |
| Gonzo's Quest | NetEnt | 95.97% | Medium |
| Eye of Horus | Blueprint Gaming | 96.31% | Medium |
| Book of Dead | Play'n GO | 96.21% | High |
| Sweet Bonanza | Pragmatic Play | 96.48% | High |
| Big Bass Bonanza | Pragmatic Play | 96.71% | High |
| Wanted Dead or a Wild | Hacksaw Gaming | 96.38% | Very high |
| Mega Moolah | Games Global (Microgaming) | 88.12% | Medium |
There is no native app, so everything runs in your browser using the HTML5 version. Details are on the app page.
FAQ
How many games does Spinboss have?
The casino lists 36,000+ games. Most are slots, with live dealer tables, game shows, crash games and instant games alongside them. The total can shift as studios add or remove titles, so treat it as an approximate size rather than a fixed count.
Can I try the slots for free?
The fact card does not confirm a demo mode, so check the individual game in the lobby. Some studios offer practice play and others do not, and availability can depend on your account and location. Free spins from promotions are a separate matter and come with their own terms.
Which providers supply Spinboss casino games?
The named providers are NetEnt, Microgaming, Pragmatic Play and Evolution Gaming, the last of which handles live dealer games. Titles in this guide also come from Play'n GO, Blueprint Gaming, Big Time Gaming, Hacksaw Gaming and Spribe, so the mix covers slots, live and instant games.
Which slot has the lowest volatility?
Of the slots listed here with a volatility figure, Starburst is the only low-volatility one, with a 96.09% RTP and 10 paylines. Gonzo's Quest, Eye of Horus, Rainbow Riches and Mega Moolah sit at medium. Most of the others are high or very high.
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