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Eternal Duel

8.2/10

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Eternal Duel
8.2/10

Eternal Duel Slot Review

Game Provider Hacksaw Gaming
Minimum Bet 0.10
Maximum Bet 50
Maximum Win 15,000x
Paylines 19
Release Date 12/03/2026
RTP 96.42%
Mechanics Video Slot
Volatility High

Two brothers stand divided by fate. Two realms destined to collide. Born of the same blood but shaped by two opposing worlds, Rhea’s devotion and Cronos’ cruelty. Rulers of the heavens and underworld clash, each refusing to fall at the hands of the other. When the dust settles and skies grow still, power will belong to only one.

Eternal Duel from Hacksaw Gaming brings the age-old conflict between Zeus and Hades front & centre, drawing players into a world of divine power and chaos, where every spin shapes the outcome.

Greek mythology has reigned over slots for quite some time now, and for good reason. Tales of Gods, Titans, and epic power battles make for some of the best high volatility gameplay, cinematic visuals, and win potential. Zeus, ruler of the skies, and Hades, lord of the underworld, are highly recognised Greek Gods, known for their opposing domains of light & dark, order vs chaos.

Eternal Duel harnesses the immense power of both Gods through its features and mechanics. One in particular that stands out for us is the DuelReels mechanic, a Hacksaw Gaming creation that appeared in Phoenix DuelReels, among others. This idea pits the brothers against one another, increasing the volatility in a single spin.

In addition, players can indulge in multiple Free Spins modes, two of which align with the game’s divine rivals. Beyond these lies a hidden bonus, appearing as the most elusive of the three, delivering the highest payout potential. Together, this setup ensures Eternal Duel isn’t just your standard mythology-themed slot, but a clash of risk, reward, and godlike power…

Eternal Duel Base Game
Eternal Duel: Base Game

Base Game & Features

Eternal Duel is a highly volatile (4/5) video slot with 5 reels, 5 rows, and 19 fixed pay lines. Paytable symbols form winning payouts on the reels when 3, 4, or 5 fall upon adjacent reels, starting from reel 1.

Zeus and Hades both share the highest-paying position, followed by Cerberus, Skulls, Staff, and A, K, Q, J, & 10 royals. After a spin is complete, each winning combination awards a fixed payout between 0.2x and 15x your bet.

Furthermore, Wild symbols substitute for all symbols in the paytable, while FS Scatters & Vs symbols cannot land on the same reel in a spin. Lastly, Dead symbols are non-paying and do not affect gameplay.

Winning Combinations Occur When 3-5 Identical Symbols Land on Adjoining Reels
Winning Combinations Occur When 3-5 Identical Symbols Land on Adjoining Reels

DuelReels

When a Vs symbol appears, it will expand into a DuelReel as long as it is part of a winning combination. All positions of the expanded DuelReel count as Wild symbols, substituting for all symbols in the paytable.

Once expanded, the DuelReel triggers a Duel between Zeus and Hades, with each side being given a random Multiplier between 2x and 100x your bet. The current Multiplier from the winning Greek God will be applied across the entire DuelReel, allowing winning combinations that pass through it to be multiplied by its respective value.

Zeus & Hades Battle it Out on DuelReels to Award Their Respective Multiplier
Zeus & Hades Battle it Out on DuelReels to Award Their Respective Multipliers

FS DuelReels

When 3+ FS Scatters land in the same spin, each FS Scatter transforms into an FS DuelReel, revealing 2 individual values that duel against each other. The winning value of each FS DuelReel is added together to determine the total number of Free Spins awarded for the session. FS DuelReels can reveal values of 2, 3, 4, 5, or 10.

Additionally, there is a chance for FS DuelReels to upgrade to the next Free Spins mode:

  • 3 FS DuelReels + 1 Upgrade: Triggers the Zeus Fury Bonus
  • 3 FS DuelReels + 2 Upgrades: Triggers the Eternal Destruction Bonus
  • 4 FS DuelReels + 1 Upgrade: Triggers the Eternal Destruction Bonus

Eternal Duel: Free Spins

Landing 3 FS DuelReels in the base game triggers the Hades Havoc Bonus, awarding 6 Free Spins.

During this mode, a Reel Multiplier is located across the top & bottom of each reel, starting with a random Multiplier between 2x and 50x your bet. When a DuelReel is triggered, the respective Multipliers are taken from the Reel Multiplier for that reel.

Reel Multipliers will progressively increase throughout the session by landing Relic & Cyclops symbols. When either of these symbols lands on the top two rows of the grid, the top Reel Multipliers are affected. Otherwise, the bottom Reel Multipliers of the grid are affected when a Cyclops or Relic symbol lands on the bottom two rows.

If a Cyclops or Relic symbol lands on the middle row, it automatically affects both the top & bottom Reel Multipliers. Please note that Reel Multipliers are capped at 999x your bet.

  • Relic: Adds their value to the top, bottom, or both Reel Multipliers for the reel they appear on
  • Epic Relic: Adds a value between 1x and 50x your bet to all Reel Multipliers on the top & bottom rows
  • Cyclops: Multipliers the top, bottom, or both Reel Multipliers for the reel they appear on
  • Epic Cyclops: Multipliers all Reel Multipliers across the top & bottom rows by x2, x3, x4, x5, or x10

Each additional DuelReel awards between +2 and +10 Free Spins.

FS DuelReels Determine the Number of Free Spins Each Session Begins With
FS DuelReels Determine the Number of Free Spins Each Session Begins With

Zeus Fury

Alternatively, landing 4 FS DuelReels in the same spin triggers the Zeus Fury Bonus, awarding 8 Free Spins.

This mode retains the mechanics from the Hades Havoc Bonus. When Wild symbols appear on the reels, they receive a Multiplier from one of the Reel Multipliers of the reel they land on. If a Wild symbol lands on the middle row, it receives the combined value of both Reel Multipliers for that reel.

Once a Wild symbol is part of a win, its Multiplier is instantly applied. If a winning combination includes more than 1 Wild Multiplier, their values are added together before being applied to the win.

In addition, when a Relic, Cyclops, Wild, or DuelReel symbol lands on the same spin, they activate in order, starting with the Relic & Cyclops symbols, and award additional FS DuelReels between +2 and +10 Free Spins.

Eternal Duel Zeus Fury Free Spins
Eternal Duel: Zeus Fury Free Spins

Eternal Destruction

Triggering the Eternal Destruction Bonus requires 5 FS DuelReels to land in the same spin, awarding 10 Free Spins. Again, this bonus maintains the same mechanics from the Zeus Fury Bonus, where at least 1 Wild, Relic, or Cyclops symbol is guaranteed on every spin, along with a single DuelReel.

Featurespins & Bonus Buy

Players may purchase any of the following Featurespins & Bonus Buy options:

  • Bonushunt Featurespins: Each spin is 5 times more likely to trigger a Free Spins mode for 3x your bet per spin
  • Godly Featurespins: Each spin guarantees at least 1 DuelReel for 50x your bet
  • Deadly Featurespins: Each spin triggers 4 DuelReels, while Dead symbols appear on reel 5, for 1,000x your bet
  • Hades Havoc: Awards 6 Free Spins minimum with a top & bottom row of progressive Reel Multipliers for 80x your bet
  • Zeus Fury: Awards a minimum of 8 Free Spins with Wild Multipliers & Bonus Upgrades for 300x your bet

Eternal Duel has a maximum win capacity of 15,000x your bet. If a single session achieves this, the player returns to the base game with the qualifying amount.

Eternal Duel Featurespins & Bonus Buy Options
Eternal Duel: Featurespins & Bonus Buy Options

Our Honest Verdict

There is something about Greek gods and mythology that naturally oozes power & excitement, and Eternal Duel certainly fits into that space. The presence of divine Gods and the myth-fuelled conflict between them only adds further excitement to gameplay.

While a war between brothers may not be to everyone’s tastes, Eternal Duel offsets this with striking visuals, soundscapes, and impressive animations across the board, with both Zeus and Hades displayed as sculpted, imposing figures that pack plenty of brawn.

In terms of gameplay, the DuelReels mechanic once again steals the limelight. After getting acquainted with this mechanic in previous releases, it’s clear that Hacksaw Gaming refuses to let it go stale, and for good reason. Each new release with this mechanic finds a way to elevate its concept rather than simply recycle it.

In Eternal Duel, that evolution comes in the form of FS DuelReels, which determine the number of starting Free Spins for each session. This is a subtle but direct change that bears weight to the mechanic, giving it a significant boost in appeal that players desire.

The Free Spins experience is enhanced by the additional Reel Multipliers, which play an important role in elevating the overall win potential for each session. As these Multipliers climb, every winning combination pushes more meaningful payouts rather than short-lived bursts.

Relic & Cyclops symbols form a key part of Free Spins, acting as the catalysts that allow Reel Multipliers to achieve higher values. When combined with DuelReels, they help make the 15,000x max win potential feel more achievable rather than purely theoretical.

All in all, Eternal Duel blends the power of Greek mythology with a refined DuelReels mechanic and impressive win potential, making it a top choice for fans of Hacksaw Gaming and mythology buffs alike.

*The images found in this slot review are currently from Demo Play. On average, our reviews are written prior to the initial release date and before real play is available.

Eternal Duel FAQs

  • What is the DuelReels mechanic in Eternal Duel?
    The DuelReels mechanic is a signature feature from Hacksaw Gaming that places opposing characters or reels against each other. In Eternal Duel, this feature plays a vital role in the base game and triggers the Free Spins modes.
  • How many Free Spins modes are available in Eternal Duel?
    Eternal Duel has 3 distinct Free Spins modes, each one being more volatile than the one before. The first two modes align with Zeus and Hades, respectively, while the final bonus acts as the game’s Hidden Bonus, offering the most potential.
  • What is the maximum win potential in Eternal Duel?
    This game offers a generous max win potential of up to 15,000x your bet, made more achievable through Reel Multipliers, Relic & Cyclops symbols, and enhanced DuelReels.
  • How important are Relic & Cyclops symbols to reaching high Multipliers?
    Relic & Cyclops symbols are key drivers behind Reel Multiplier escalation, which can boost each Reel Multiplier up to x999 in a single session.