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Dark Summoning — Free Demo & Game Details

Slot game

Slot by Hacksaw Gaming

#R

96.36%

RTP

Default setting

#MWM

10666x

Maximum win multiplier

#V

high

Volatility

Level 4 of 5

#BR

From 0.1 operator-dependent units

Bet range

#P

24

Paylines

#GG

5 × 6

Game grid

RTP profiles

Default setting

Base game

Default96.36%

The highest of the four settings.

94.34% setting

Casino setting

94.34%

Two points below the default. Every purchase on this setting returns between 94.29% and 94.34%, and the Trial by Hellfire buy matches the base figure exactly.

92.22% setting

Casino setting

92.22%

On this setting a spin wins something about once every 3.4 spins, and all three purchases return slightly more than the base game, from 92.28% to 92.45%.

88.28% setting

Casino setting

88.28%

The lowest of the four settings, 8.08 points below the default.

Our verdict

0xPlaySlots opinion
7.2/ 10our score for this game

The base game has a real engine, with the Super Cascade clearing whole symbol types and Will of the Order dropping wilds in batches. The Unholy collection is fed by those same cascades so the trigger rewards chains rather than raw scatter luck. Rise to Salvation is the best idea on the reels and its buy is priced fairly at 96.42% as the only purchase above the base return. That earns a 7.2 and no more, because regular lines pay 0.2× to 10×, multipliers add instead of compounding and the grid picks the bonus while casinos can drop returns to 88.28%.

About Dark Summoning

Dark Summoning pays on 24 fixed lines across a 5×6 grid and its engine is the Super Cascade. Each win clears every copy of the winning symbol from the whole grid rather than only the line that paid, and the gaps refill until no new win forms. The engine has to carry the game because the paytable is shallow, with runes worth 1× for a full line of five and the best regular symbol worth 10×. Wilds hold 2× to 100× and multipliers in the same winning combination are added before they apply, so two 100× wilds make a 200× line rather than a 10,000× one. Will of the Order supplies wilds in bulk because each Order symbol that lands turns itself and one to nine other symbols into wilds. The bonus trigger runs through those same cascades because an Unholy scatter is collected only when it lands alongside a win unless three land at once. An Order symbol on the grid when the third Unholy is collected sends the round to Rise to Salvation and its absence sends the round to Trial by Hellfire. Trial by Hellfire marks every winning position with Hellfire and a landing Unholy symbol turns each marked position into a wild that can carry a multiplier. Rise to Salvation takes the multipliers off the wilds and runs the grid upwards while climbing Lost Souls build a global multiplier that also multiplies cash prizes of up to 666×.

Dark Summoning free demo

Launch the provider-hosted demo in a new tab.

Editorial takeaways

  • A line win removes every symbol of the winning type from the whole grid, not just those on the winning line, and new symbols cascade in until no new win forms.
  • Multipliers on wilds run from 2× to 100× and are added together before they apply, and wilds carry no multiplier at all inside Rise to Salvation.
  • Three Unholy scatters collected in one base-game round award 10 free spins in Rise to Salvation when an Order symbol is on the grid and in Trial by Hellfire otherwise.
  • On the 96.36% setting the three purchases return between 96.33% and 96.42%, and a purchase may cost more than the table's maximum bet.
  • The game runs at four return settings from 96.36% down to 88.28%, and the rules screen shows the one in use.
  • The maximum win is 10,666× the bet, can be reached in the base game and in both bonus rounds, and ends the round at once when it lands.

Limitations and version notes

  • The paytable does almost nothing on its own, with a three-rune line paying a fifth of the stake and the best regular line paying 10×. Multipliers add rather than compound, so each extra 100× wild on a line adds 100× to the total instead of multiplying it.
  • A dry spin makes no progress toward a bonus, because an Unholy symbol that lands without a win is lost unless two more land with it. The collection empties at the end of every round, so nothing builds up from one spin to the next.
  • Wilds carry no multipliers in Rise to Salvation, so every win before a Global Multiplier Lost Soul Ascends pays face value off a paytable whose best regular line is 10×. A round whose Souls land low and whose cascades stop short pays little.
  • Casinos can run this game at four return settings, down to 88.28%, more than eight points below the top one, and the lowest-return build can run with no buy menu at all. The rules screen shows the setting in use.

Features & Themes

Game features

Fixed PaylinesSuper CascadesWild MultipliersAdditive Multiplier StackingWild ConversionScatter Collection TriggerTwo Bonus RoundsFree SpinsUpward CascadesGlobal MultiplierCash Prize SymbolsFeature SpinsTwo Bonus BuysOperator Configurable Rtp

Themes

occultunderworld

Game mechanics

Super Cascade

Base + bonus#01

Any winning combination on the 24 lines.

Once the current wins are paid, every symbol of each winning type is removed from the whole grid and not only the symbols sitting on the winning line.

New symbols keep cascading until no new win forms, and nothing carries into the next spin.

New symbols cascade into the gaps and can form new wins and further cascades.

Additive wild multipliers

Base + bonus#02

A wild lands, is created by Will of the Order, or is created by the Fires of Hell sequence in Trial by Hellfire.

Wilds substitute for every paying symbol, and multipliers on wilds in the same winning combination are added together before the total is applied to that win.

A multiplier lasts only while its wild stays on the grid and leaves with the cascade that removes it.

Multipliers never compound. Two 100× wilds on one winning line make a 200× line rather than a 10,000× one.

  • Multiplier values are 2×, 3×, 4×, 5×, 10×, 15×, 20×, 25×, 50× and 100×.
  • Wilds cannot carry a multiplier in Rise to Salvation.
  • The wild is blue in the base game and Rise to Salvation.
  • The wild is red in Trial by Hellfire.
  • Both wild colours follow the same rules.

Will of the Order

#03

An Order scatter symbol lands.

The Order symbol replaces itself and 1 to 9 other symbols with wilds, which may arrive with or without multipliers.

The feature resolves as soon as the Order symbol lands and before wins are evaluated.

The wilds it makes are ordinary wilds and leave with the cascade that removes them. Several Order symbols landing together run the feature once each.

  • One Order symbol makes between two and ten wilds.
  • The Order symbol does not appear in Trial by Hellfire.

Unholy collection

Base game#04

An Unholy scatter lands during a base-game round.

The Unholy symbol is collected in the top-right corner of the grid only if it lands together with at least one winning combination.

The collection holds for the current round only and empties when the round ends.

Three Unholy symbols landing at the same time are collected immediately, win or not. Three collected in the same round open a bonus.

  • The Unholy symbol never lands on reel 1 or reel 2.
  • The Unholy symbol does not appear in Rise to Salvation.

Bonus routing

Base game#05

The third Unholy symbol is collected in a base-game round.

An Order symbol on the grid at that moment opens Rise to Salvation, and no Order symbol opens Trial by Hellfire.

Both rounds start with 10 free spins. The player does not choose between them.

Exclusive special symbols

Base + bonus#06

The Order symbol does not appear in Trial by Hellfire, and the Unholy symbol does not appear in Rise to Salvation.

Trial by Hellfire therefore never runs Will of the Order, and Rise to Salvation never collects an Unholy symbol.

  • The Unholy symbol never lands on reel 1 or reel 2.

Fires of Hell

Bonus#07

An Unholy symbol lands during Trial by Hellfire.

The landing Unholy symbol and every symbol on a Hellfire-marked position are replaced with wilds, which may carry multipliers.

The Fires of Hell sequence lasts until the next cascade, and wins made while it is active do not create new Hellfire.

Winning positions are marked with Hellfire as wins are paid. All Hellfire is removed once the wilds are made.

Upward cascades

Bonus#08

Rise to Salvation starts.

For the whole round, symbols drop and cascade upwards rather than downwards.

Lost Souls

Bonus#09

A Lost Soul symbol lands in Rise to Salvation.

A Lost Soul that reaches the top row Ascends, adding to the global multiplier above the reels or paying a cash prize.

Lost Souls stay on the reels and move upwards with each cascade until they Ascend or the bonus ends.

The global multiplier applies to every winning combination and also multiplies any cash prize. One 666× prize under a 100× global would be 66,600×, more than six times the 10,666× cap, so the cap rather than the feature limits this round.

  • Global multiplier steps are 2×, 3×, 4×, 5×, 10×, 15×, 25×, 50× and 100×.
  • Cash prizes are 10, 15, 20, 25, 50, 100 or 666 times the bet.
  • A Global Multiplier Lost Soul adds a step to the global multiplier when it Ascends.
  • A Cash Prize Lost Soul pays its prize when it Ascends.

Symbol removal after three losing spins

Bonus#10

Three non-winning spins in a row during Rise to Salvation.

On the third spin, 3 to 5 random low- or high-paying symbols are removed from the grid.

Maximum win stop

Base + bonus#11

Winnings reach 10,666 times the bet.

The round ends immediately, the win is awarded, and any remaining free spins or bonus features are discarded.

The cap can be reached in the base game, in Trial by Hellfire and in Rise to Salvation.

Return settings and stake limits

#12

Dark Summoning runs at four return settings. The rules screen shows which one is loaded.

  • The return settings are 96.36%, 94.34%, 92.22% and 88.28%.
  • Purchase returns move with the setting.
  • The Rise to Salvation buy returns 96.42% on the top setting and 94.29% on the 94.34% setting, the worst of the three there.
  • Casinos can switch off the bonus buys and the FeatureSpins mode separately.
  • The 88.28% setting can run with no purchasable bonus at all.
  • Stakes start at 0.10 and the maximum varies from casino to casino.
  • A feature buy may cost more than the maximum stake.

Bonus rounds

Trial by Hellfire

Free spins
10 spins

Three Unholy symbols collected in one base-game round with no Order symbol on the grid when the third is collected.

Wins mark their positions with Hellfire, and a landing Unholy symbol turns itself and every marked position into wilds that can carry up to 100×. The more positions have won before an Unholy symbol arrives, the more wilds it makes. Wilds here are the red variant and the Order symbol does not appear. The maximum win can be reached inside the round.

  • Uses Super Cascade, Additive wild multipliers, Fires of Hell, Exclusive special symbols, Maximum win stop.

Rise to Salvation

Free spins
10 spins

Three Unholy symbols collected in one base-game round with an Order symbol on the grid when the third is collected.

Symbols cascade upwards and Lost Souls stay where they land and climb with each cascade. A Soul that reaches the top row either adds to a global multiplier applied to every win or pays a 10× to 666× cash prize multiplied by that global. Wilds carry no multipliers here and the Unholy symbol does not appear, so every multiplier in the round comes from the global meter. The maximum win can be reached inside the round.

  • Uses Upward cascades, Super Cascade, Lost Souls, Symbol removal after three losing spins, Exclusive special symbols, Maximum win stop.

Feature purchases

Purchase options and their bonus rounds

Feature-purchase costs can exceed the ordinary maximum stake shown for the base game.

BonusHunt FeatureSpins

Feature Spin

This mode is not a round, and while it is on every spin costs 3× the bet and is 5 times more likely to trigger a bonus. It stays on until DISABLE is pressed, the Order symbol still picks the bonus, and the extra triggers per unit staked cost 0.03 points of return on the 96.36% setting.

Cost
3x stake
RTP for this option
96.33%
Volatility
Very High

The same mode returns 94.32% on the 94.34% setting and 92.45% on the 92.22% setting.

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Trial by Hellfire

Bonus Buy

Buys 10 free spins in Trial by Hellfire. On the 96.36% and 94.34% settings the purchase returns exactly the base game's figure.

Cost
130x stake
RTP for this option
96.36%
Volatility
Very High
Linked bonus round
Trial by Hellfire

The same buy returns 94.34% on the 94.34% setting and 92.28% on the 92.22% setting.

Try in Demo

Rise to Salvation

Bonus Buy

Buys 10 free spins in Rise to Salvation. It is the only purchase that returns more than the base game on the 96.36% setting, and the least of the three on the 94.34% setting.

Cost
250x stake
RTP for this option
96.42%
Volatility
High
Linked bonus round
Rise to Salvation

The same buy returns 94.29% on the 94.34% setting and 92.29% on the 92.22% setting.

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Feature Artwork

Bonus buy and feature screens

Dark Summoning bonus buy menu image
Bonus Buy Preview
Dark Summoning feature overview image
Feature Preview

Screenshot Gallery

In-game screenshots

Dark Summoning screenshot 1
Dark Summoning screenshot 2
Dark Summoning screenshot 3
Dark Summoning screenshot 4
Dark Summoning screenshot 5

Paytable & Symbol Values

Winning combinations and symbol payouts

Symbol payouts

#PT
Symbol345
Rune 10low0.2×0.5×1×
Rune Jlow0.2×0.5×1×
Rune Qlow0.2×0.5×1×
Rune Klow0.2×0.5×1×
Rune Alow0.2×0.5×1×
Scissorshigh0.5×1×2.5×
Mothhigh0.5×1×2.5×
Crowhigh0.8×1.5×5×
Eye Pyramidhigh0.8×1.5×5×
Goat Sigilhigh1×2×10×
Wildwild··30×

Wild. Substitutes for every paying symbol and pays only for five of a kind at 30× before multipliers, with no three-wild or four-wild award. Outside Rise to Salvation it can carry a 2× to 100× multiplier.

Values are multiples of the total bet for one line, and only the highest win on each line is paid. The five rune symbols share one pay row, and the Order, Unholy and Lost Soul symbols pay nothing on their own.

Special symbols

#SS
Order
This scatter pays nothing itself and replaces itself and 1 to 9 other symbols with wilds that may or may not carry multipliers. One on the grid when the third Unholy symbol is collected sends the round to Rise to Salvation, and it never appears in Trial by Hellfire.
Unholy
This scatter pays nothing itself and is collected in the top-right corner when it lands with a win, or at once when three land together. Three collected in one base-game round open a bonus, and a landing Unholy starts the Fires of Hell sequence in Trial by Hellfire.
Global Multiplier Lost Soul
This symbol appears in Rise to Salvation only and stays where it lands, climbing with each cascade. On reaching the top row it Ascends and adds 2× to 100× to the global multiplier above the reels.
Cash Prize Lost Soul
This symbol appears in Rise to Salvation only and stays and climbs the same way. On Ascending it pays 10 to 666 times the bet, multiplied by the current global multiplier.

Our Team Reviews

Signed reviews from our team

1 review
FEATURED

Rise to Salvation is the only place Dark Summoning's multipliers meet a prize worth multiplying

MJ

Marcus Jones

High Roller Expert at 0xPlaySlots

September 14, 2026
7.2/10

Outside Rise to Salvation, nothing here is worth multiplying

Dark Summoning puts wild multipliers of 2× to 100× on top of a paytable whose best regular line pays 10× and whose five-wild line pays 30×, and it adds those multipliers together instead of compounding them. I read that combination as the whole game. In the base game and in Trial by Hellfire the only road toward the 10,666× cap is more wilds on more lines, because nothing a multiplier sits on is large. Rise to Salvation is the one round built the other way: it strips the multipliers off the wilds and applies a global meter to cash prizes of up to 666×. That round is why the game is good, and the fact that the grid rather than the player decides whether it opens is a large part of why it stops at 7.2.

The arithmetic I run on the paytable is short. A grid with the goat sigil on all 30 positions pays 240× across the 24 lines. The same grid made entirely of wilds without multipliers pays 720×, under 7% of the cap on a single cascade step, so an unmultiplied chain would need fifteen of those full grids in one round to get there. No line of regular symbols reaches the cap alone either: a goat sigil with four 100× wilds adds up to 400× on a 10× pay, which is 4,000×, or 37.5% of the cap. Only a line of five wilds can cap the round by itself, and I make the requirement at least 356× between them. Two 100× wilds and three 50× wilds add to 350× and pay 10,500×, still 166 short.

Hacksaw assembled this from its own parts

Dork Unit shares the fixed lines, the wild multipliers that add, the rule that pays only the highest win on each line, and the practice of keeping each bonus round's trigger symbol out of the other round. Cursed Seas shares the wild that pays only for five of a kind and a trigger whose make-up decides which of two bonus rounds opens. Supreme Zeus runs the same Super Cascade on 1,024 ways. I read Dark Summoning as those three ideas fitted to one 5×6 board, a refinement rather than an invention, and the Unholy collection and Rise to Salvation are what lift it above a remix.

Moving the Super Cascade onto 24 lines changes what it does. A winning line pays for at most five positions, but the winning symbol can sit anywhere on the thirty, so one win can clear far more of the board than the line that paid. A three-rune line worth 0.2× clears every copy of that rune under the same rule that clears every goat sigil after a 10× line. I treat the low pays as the price of refills rather than a source of return, and read as a fuse rather than a prize table, the shallow paytable is doing its job.

Chains, not scatters, open the bonus

An Unholy scatter counts only when it lands alongside a win, unless three arrive together, and the collection empties when the round ends. On the 92.22% build a spin wins something about once every 3.4 spins, which leaves roughly seven base spins in ten with no win for a lone Unholy to land beside. Every cascade step is another drop in which an Unholy can arrive next to a new win, so the trigger rate climbs with chain length.

The same chains then hand the choice of bonus to the grid. An Order symbol present when the third Unholy is collected sends the round to Rise to Salvation, and its absence sends it to Trial by Hellfire. The player has no say short of buying Rise outright at 250×.

BonusHunt FeatureSpins is the efficient lever on the trigger. Each spin in the mode costs 3× the bet and is 5 times more likely to trigger a bonus, so a unit staked there buys 5/3, about 1.67 times, the bonus chances of a unit staked on normal spins, for 0.03 points of return on the top setting. I rate that a good trade. It does nothing about the routing, though, so it buys more bonuses without buying the better one.

Trial by Hellfire scales the problem and Rise to Salvation solves it

Trial by Hellfire is the base game's arithmetic with a bigger supply of wilds. Every winning position takes a Hellfire mark, and a landing Unholy turns itself and every marked position into a wild that can hold up to 100×. It reaches the cap through breadth, with many multiplied wilds across many lines at once. It is still adding multipliers onto pays of 30× or less, the Order symbol never appears to add wilds of its own, and an Unholy that lands before the cascades have marked much converts little.

Rise to Salvation changes the shape of the problem. Wilds hold no multipliers, cascades run upward, and Lost Souls climb until they reach the top row and Ascend, either adding a 2× to 100× step to the global multiplier or paying 10× to 666× the bet, multiplied by that global. The global touches every line win and every cash prize, so for the first time a multiplier sits on something large. By my arithmetic a 666× prize needs a global above 16× to cap the round on its own: 666 × 16 is 10,656, ten short, and under a 25× global the same prize is 16,650×. A 100× prize under a 100× global is 10,000×. Outside this round, a five-wild line needs 356× of stacked wild multipliers to do what one 666× Soul does here under a 17× global.

The cost of that design falls early in the round. Until a Global Multiplier Soul Ascends, every win pays face value off a paytable whose best regular line is 10×, and the stall breaker that removes 3 to 5 symbols after three non-winning spins in a row keeps the grid moving without paying anything itself. I still rank it the better of the two rounds by a distance, because it is the only place where the number under the multiplier is big enough to matter.

Each purchase is the best on one build and the worst on another

On the 96.36% setting the order is Rise to Salvation at 96.42%, Trial by Hellfire at 96.36% and FeatureSpins at 96.33%. On the 94.34% setting it becomes Trial by Hellfire at 94.34%, FeatureSpins at 94.32% and Rise to Salvation at 94.29%. On the 92.22% setting FeatureSpins leads at 92.45%, ahead of Rise to Salvation at 92.29% and Trial by Hellfire at 92.28%. Across those three settings I count each purchase first once and last once. The button still matters less than the build the casino loads: the widest gap between purchases on one setting is 0.17 points, and the gap between the top and bottom settings is 8.08.

On the top setting the two bonus buys are priced sensibly against each other. Trial by Hellfire costs 130×, so the cap is about 82 times its price. Rise to Salvation costs 250×, 1.92 times as much, with a cap of about 42.7 times its price, lower volatility and a return 0.06 points higher. I call that the right shape for a dearer buy: more money for a better rate and a tighter spread. The better rate still costs more per purchase, about 8.95× the bet on average against about 4.73× for Trial by Hellfire, because 3.58% of 250× is larger than 3.64% of 130×. At a €75 top stake, a Rise buy is €18,750, far above the table maximum.

The engine earns 7.2 and the paytable stops it there

The game suits someone who values long cascade chains and will pay 250× for Rise to Salvation on the 96.36% build, the one setting where the best round also has the best-priced buy. Anyone who wants line pays to carry weight, or wants to pick a bonus round without buying it, should look elsewhere, and below the top build the Rise buy loses its lead while the 88.28% build can run with no buy at all.

The Super Cascade is a real engine, the Unholy collection rewards it, and Rise to Salvation is a strong round with an honestly priced buy. I count that as one real strength, and the score goes no higher because everything outside that round adds multipliers onto pays of 30× or less, the grid chooses which bonus opens, and a casino can run the game 8.08 points below its best.

Pros

  • Super Cascade clears every copy of each winning symbol, so even a 0.2× rune line refills the board
  • Unholy scatters count only alongside wins, so the trigger rewards cascade chains over scatter luck
  • Rise to Salvation multiplies cash prizes of up to 666× by a global meter, where multipliers finally matter
  • The 250× Rise to Salvation buy returns 96.42% on the top setting, the only purchase above the base game
  • FeatureSpins makes a bonus 5 times more likely at 3× the bet for 0.03 points of return

Cons

  • Regular lines pay 0.2× to 10×, and five wilds pay only 30× before multipliers
  • Wild multipliers add, so two 100× wilds make a 200× line rather than a compounding stack
  • The grid, not the player, decides which bonus opens unless the 250× Rise buy is paid
  • The Rise to Salvation buy falls to the worst of the three purchases on the 94.34% setting
  • Casinos can run it as low as 88.28%, and that build can run with no buy menu at all

Verdict

Dark Summoning has a real cascade engine and, in Rise to Salvation, one strong round whose 96.42% buy is the only purchase above the base return. Line pays of 0.2× to 10×, additive multipliers and a bonus the grid picks hold it at 7.2.

#GP

Game Provider

#GD

Game Details

Information

Hacksaw Gaming
Video Slot
Fixed Payline Slot
Cascade Slot
Bonus Buy Slot
24 paylines