By Just Slots
Descend the stone stairs into the chamber where the demon queen keeps her book. Reach the free spins and the book picks one symbol to expand across a whole reel, which is where the largest payouts come from. Book Of Abyss is a high volatility, fixed-payline slot from Just Slots. Ten fixed paylines pay 3 or more matching symbols, counted from the leftmost reel. Three book symbols then open 10 free spins. Before those spins begin a multiplier is assigned, and the double-up wheel lets you try to improve the symbol or multiplier at the risk of losing the round. A high-value expanding symbol paired with a large multiplier pays as much as 150,000x your stake. Here is how you play.
Pick your stake and spin the 5x3 grid.
Watch for winning combinations of 3 or more matching symbols on any of the 10 fixed paylines, starting from the leftmost reel.
Land 3 or more book symbols anywhere on the reels to trigger 10 free spins.
Before the free spins begin, one symbol is chosen to be the expanding symbol. You can use the double-up round/wheel feature to try and improve the chosen symbol or multiplier, but this risks losing the feature.
During free spins, the chosen expanding symbol expands across its reel when it contributes to a win, even if matching symbols are not adjacent.
You can also use the Bonus Buy feature to enter free spins directly at a cost of 100x, 300x, or 1,250x your stake, or activate the HotSpin / Ante stake to increase the chance of feature entry by adding more book symbols.
Expanding symbol: Before the free spins feature begins, one symbol is chosen to expand, and it can then expand across its reel when it contributes to a win, even if matching symbols are not adjacent.
double-up round/wheel: Before the free spins round starts, players can try to improve the chosen symbol or multiplier but risk losing the feature entirely.
HotSpin / Ante stake: This option increases the chance of feature entry by adding more book symbols at a higher stake.
Free spins (at least 3 book symbols): It awards 10 free spins. One symbol becomes an expanding symbol, and a multiplier is assigned before the round starts. The expanding symbol expands on winning lines. Additional book symbols can retrigger the round and add extra multiplier effects.
Bonus Buy (100x stake): This tier guarantees different book-symbol entry conditions.
Bonus Buy (300x stake): This tier guarantees different book-symbol entry conditions.
Bonus Buy (1,250x stake): This tier guarantees different book-symbol entry conditions.
The RTP is 96.34% on Acebet.cc.
Volatility is high, rated 5/6 by the provider.
The most it pays is 150,000x your stake. The top win comes from a high-value expanding symbol in free spins combined with a large multiplier.
There are 10 fixed paylines, so every spin plays all 10.
| Symbol | Top pay |
|---|---|
| Queen of Demons Abyss | 150x |
| Demon servant | 100x |
| Skeleton knight | 75x |
| Book Scatter | 150x |
Wins land on 26% of spins on Acebet.cc. That is roughly one paying spin in 4.
No, there is no demo mode on Acebet.cc. Gold Coins are the free way to play it.
Yes, it has a free spins round. It triggers when 3 or more book symbols land anywhere on the reels, awarding 10 free spins. Before the round begins, one symbol is chosen to become an expanding symbol, which can fill its reel when it contributes to a win. Acebet.cc's welcome bonus can be used on Book Of Abyss.
Yes, it has bonus games. It features free spins and a bonus buy option. The bonus buy has three tiers, costing 100x, 300x, or 1,250x your stake.
Landing 3 or more book symbols triggers 10 free spins. Before the round begins, a pre-feature double-up round/wheel appears, allowing a chance to improve the chosen expanding symbol or its multiplier. One symbol is then selected to become the expanding symbol for the duration of the feature. When this symbol lands on a winning line, it expands to cover its entire reel. This expansion can create larger payouts even when matching symbols are not adjacent. Additional book symbols can retrigger the feature and add more multiplier effects.
Yes. New players get 10 SC free at signup with code ACEBET, no purchase necessary, plus a 200% bonus on a first Gold Coin purchase up to 10 SC. Bonus SC carries a 1x playthrough before it can be redeemed. Both can be played on Book Of Abyss. Claim the no deposit social casino bonus. You must be 18 or older, and eligibility depends on where you play from.
It offers high volatility play with a maximum win of 150,000x the stake. Its defining mechanic is the expanding symbol free spins, where a chosen symbol expands across its reel to create larger payouts. The slot also includes a Bonus Buy feature with three tiers at 100x, 300x, and 1,250x the stake, each guaranteeing different entry conditions for the bonus round. There is also social casino roulette, provably fair and built in house.
Free spins are triggered by landing at least 3 book symbols anywhere on the reels. The book symbol acts as both a wild and a scatter.
Before the free spins round begins, one symbol is chosen to become the expanding symbol. During the feature, this symbol can expand across its entire reel when it contributes to a win, even if matching symbols are not adjacent.
Yes, it offers a Bonus Buy feature. Buy levels cost 100x, 300x, and 1,250x the stake, with each tier guaranteeing different entry conditions for the free spins feature.
Yes, an Ante stake or HotSpin option is available. This feature increases the stake to add more book symbols to the reels, which in turn increases the chance of triggering the free spins bonus round.
Here are more dark slots from the full social casino slots library on Acebet.cc.
RTP and volatility are set by the provider and subject to change. The figures above were accurate at publication. The in-game paytable always shows what the build is running right now.
| Game | User | Play Amount | Multiplier | Profit |
|---|---|---|---|---|
No results. | ||||
Acebet.cc is owned and operated by Trey Mark Services Limited, a company incorporated in Cyprus with a registered office at Belapais, 4, Office 101, Strovolos, Nicosia 2057, Cyprus, registration number HE481956. Acebet.cc is a free to play social casino. No purchase necessary.
Fairness Verification: Acebet.cc operates under a strict Provably Fair protocol. All game outcomes can be independently verified using our Fairness Tools and client-seed customization.
You must be over 18 or the age of majority in your jurisdiction to interact with the website.
