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Review · No. 41946

Royalty of Olympus Extreme — review

There is a reason I always start with the numbers column rather than the graphics. In Royalty of Olympus Extreme from Barbara Bang two of the three most important fields are blank: RTP is not stated, volatility is not stated. The only fixed figure is the max win of 15.000 times the stake.

Where to play? ▸ Game rules18+ · Play responsibly
Zeus points to the plaque with the game's key stats
Key figuresRTP not specifiedVolatility not disclosedMax 15.000×Extra free spins · Avalanche
RTPNot disclosedVolatilityNot disclosedMax win15.000×PaylinesNot disclosedReleased15. april 2025
Mikkel Aagaard Review of Mikkel Aagaard· Barbara Bang·Published 15. april 2025· Theme: Olympus
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Review

Royalty of Olympus Extreme under the microscope

The release is dated 15. april 2025, and the feature list is long and familiar. But a game must be judged on what the provider actually presents, and here the basis for the most important part of the evaluation is missing.

01When the return percentage isn't listed anywhere

RTP is the only parameter that tells you about the game's long-term cost. Without it you don't know whether you're paying three or six percent of each stake to the house — and the difference is twice as large over time.

Missing RTP in the catalog data doesn't mean the game doesn't have one. It's shown in the game's own info panel at the operator you play with, and you should look it up there before you stake a krone. I don't guess at a number, and you shouldn't accept a review that does.

The same applies to volatility. It is not stated, and although the feature list points toward high volatility, that is an inference, not a disclosure.

02What the feature list actually promises

On the other hand, here's something to work with. Avalanche and Cascading describe the drop engine: winning symbols disappear, new ones fall down, the chain continues. Gonzo mechanic is also listed, which points to a multiplier that increases for each win in the same sequence.

Pay Anywhere removes the lines — symbols just need to be present in number. Scatter symbols trigger free spins, Additional Free Spins extend the round, and Free Spins Multiplier points to an accumulating factor in the bonus.

That is exactly the formula half the category runs. There is nothing in the list that explains the word Extreme in the title other than the high cap.

0315.000x with no disclosed math

A cap of 15,000 times the stake is high and matches Games in Olympus 1000 and Lightning of Olympus. But the cap alone says nothing about how likely it is, or what the rest of the distribution looks like.

Two games can have the same maximum and still behave completely differently: one with 96,5 % and frequent mid-size wins, the other with 94 % and an almost empty base game. Without the RTP number you can't distinguish them from each other.

That is why 15.000x here is a marketing figure rather than information. It is not untrue — it is just not enough to evaluate anything.

04How you should approach it

Barbara Bang is a small studio with limited documentation, and that is probably the explanation for the empty fields rather than any intent. But from the player's perspective the reason doesn't matter — the result is the same.

My recommendation is simple: open the game's info panel at your operator, find the RTP line, and compare it with the 96,5 % you can get in several other Olympus titles with the same cap. If the figure is below 96, there are better alternatives in the same category that you can find on this site.

And the usual framework applies unchanged: 18 years on Danish gambling sites, only money you can spare, and ROFUS at Spillemyndigheden or call StopSpillet at stopspillet.dk if gambling takes up more than it should.

From the demo round

Screenshots from Royalty of Olympus Extreme

I ran Extreme Royalty of Olympus in the demo with a stake of DEMO 1,00 and a balance of around DEMO 1.001,40. The base game is a tumble grid with six reels and five rows; the best base round in my session gave DROPS WIN 2,90 with a total win of DEMO 2,90.

The Buy Bonus window has two purchases at a 1,00 DEMO stake: 15 FREE SPINS for Buy 100,00 DEMO, and 15 FREE SPINS WITH ×5 for Buy 200,00 DEMO. I took the expensive one – the receipt screen read directly MULTIPLIERS START AT ×5.

It's the total multiplier to the left of the logo that carries the round. It started at ×5 and was added together spin by spin: ×22, ×42, ×52, ×57 and ×62 toward the end. With 6 free spins left it triggered a BIG WIN of 23,11, and the total payout stood at DEMO 42,20 with a balance of DEMO 801,40.

The base game in Extreme Royalty of Olympus with Zeus next to the reels
The base game with six reels and five rows at stake DEMO 1,00 and balance DEMO 1.001,40.
The Buy Bonus window in Extreme Royalty of Olympus with two prices
Two buys at bet 1,00 DEMO: 15 free spins for 100,00 DEMO, or 15 free spins with ×5 start for 200,00 DEMO.
Receipt screen for purchased free spins in Extreme Royalty of Olympus
The purchase for 200,00 DEMO gave 15 free spins with the text MULTIPLIERS START AT ×5.
Free spins in Extreme Royalty of Olympus with total multiplier x57
Free spins with 6 spins remaining: the total multiplier is at ×57, a ×5 symbol sits on the second reel, DROPS WIN 1,70 and total win DEMO 41,30.
BIG WIN in the free spins round in Extreme Royalty of Olympus
BIG WIN of 23,11 at multiplier ×62 and stake DEMO 1,00; total win DEMO 42,20, balance DEMO 801,40.

The images are our own captures from the provider's demo version of the game. The values in the tables above still come from our catalog data.

Sorted on Olympus

Themes & features

The rule set

Game rules

Base game

The game runs on the provider's standard setup. The published return to player is —, and the volatility is listed as —.

Round extension

If more scatters land during the free spins round, it is extended with extra spins. That's the mechanic that makes long rounds possible.

Avalanche mechanic

The reels clear winning symbols and let new ones fall down from above. One paid combination can thus turn into a longer sequence.

Bonus bet

With an increased stake, the frequency of bonus triggers rises. That does not change the game's theoretical return in your favour.

Bonus buy

The bonus round can be bought directly for a fixed amount of the stake instead of waiting for scatters. The price is shown in the game's buy window — and some operators turn the feature off.

Cascades

Symbols in a win are removed, and new ones fall down instead. The chain continues as long as new wins are formed by the fallen symbols.

Free spins

The scatter symbols trigger a round of free spins. The number of spins and the required number of scatters are shown in the game's info panel and can vary slightly between operators.

18+ · Play for entertainment, and set limits before you play. If you need help: stopspillet.dk / 70 22 28 25 — or self-exclude via ROFUS.

The numbers behind the game

Key figures and payouts

Key figuresValue in our catalog data
RTP according to catalog dataNot disclosed
VolatilityNot disclosed
Max win15.000×
Ways to winNot disclosed
Reel setNot disclosed
Min. indsats0,1 €
Max. betNot disclosed
Win frequencyNot disclosed
ProviderBarbara Bang
Released15. april 2025

The exact multiplier values per symbol count appear in the game's info panel and can vary with stake and operator. We reproduce only figures from our catalog data — not our own measurements in the game.

Final word from the summit

The verdict

Plus
  • 15.000x max win matches the category's bigger names
  • Complete feature package with avalanche, gonzo multiplier and accumulating Free Spins
  • Both Bonus Bet and Buy Feature as entries to the bonus round
Cons
  • RTP is not disclosed — the most important parameter is completely missing
  • The volatility is also not disclosed
  • The feature list contains nothing that is unique to the title
  • Barbara Bang has minimal documentation available
5,9

Royalty of Olympus Extreme may very well be a fine game. The problem is that it can't be proven. Without RTP and without a volatility figure you're left with a cap of 15.000x and a feature list you've seen thirty times before — and that's too thin a basis for a recommendation when competitors publish their numbers.

— Mikkel Aagaard, reviewer

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Quick answers

Frequently asked questions

What is the RTP in Royalty of Olympus Extreme?

It is not stated in the provider’s data. Look it up in the game’s info panel on your casino site before you play — we won’t guess at a number.

How high is the volatility?

The volatility is also not disclosed. The feature list points toward large swings, but that's a conclusion, not information from the provider.

What is the maximum you can win?

The maximum win is stated at 15.000 times the stake — the only fixed key figure in the game's fact sheet.

Who made the game?

Barbara Bang. The release date is 15. april 2025.