How Olympus Thunderhold works
On top of that there is an RTP of 95,74 — below the 96 that the rest of the market has settled on. The game was released 13. maj 2026 and uses the cascade engine that the Olympus genre has become synonymous with. The question is whether the engine can carry math that looks skewed on paper.
01Numbers first, theme later
High volatility is a price the player pays in patience, and the price makes sense when the reward is a high cap. In Olympus Thunderhold the cap is 2500x. By comparison, several titles in the same pool sit at 10000x and above with the same risk profile.
The RTP of 95,74 points in the same direction. The difference to 96 sounds small, but over many spins it's real, and it's not offset by a generous max cap. The numbers say you're taking a big risk for a limited reward.
Be precise here: the numbers don't make the game unusable. They make it a poor choice for someone chasing big wins, and an acceptable choice for someone who simply likes RTG's aesthetic and plays for entertainment.
02Cascade engine og Pay Anywhere
Mechanically there are no surprises. Avalanche and Cascading remove winning symbols and let new ones fall down, while Pay Anywhere and Scatter Pays mean symbols pay by count rather than by lines. It's the same framework as the genre's best-selling titles.
Scatter symbols trigger Free Spins, and Additional Free Spins make it possible to extend the round, while the Free Spins Multiplier increases the value of what lands along the way. Random multiplier places random multipliers on the grid in both base game and bonus.
All by the book. The feature list contains nothing that separates Olympus Thunderhold from a handful of other games in the pool, and that's probably the most sober criticism you can level at the title: it adds nothing.
03Buy feature in a game with a low cap
Buy Feature og Bonus Bet er begge til stede. Købefunktionen giver adgang til bonusrunden mod en fast pris, typisk et sted mellem 60 og 100 gange indsatsen i denne type spil — den præcise pris fremgår ikke af de oplyste data.
With a ceiling of 2500x the arithmetic is different than in titles where a buy can lead to a five-figure payout. The ceiling limits how large an outcome a buy can produce, which makes the buy feature less attractive than it appears at first glance.
04RTG's version of Olympus
RTG is an established studio with a broad catalogue, and Olympus Thunderhold is clearly a catalogue-filling product rather than a flagship. The themes — Gemstones, Gods, Greece, Treasures, Zeus — point the direction without surprising anyone.
The name Thunderhold suggests a hold mechanic, but Hold and Win does not appear on the feature list. It's the thunder of Zeus that's the reference, not a lock mechanic. Such naming choices are worth noting if you're looking for a specific format.
Screenshots from Olympus Thunderhold
Olympus Thunderhold from RTG is a 6x5 grid with gemstones, goblets and a Zeus scatter. The demo started on FUN BALANCE 1.000,00 with BET 1,00, and the client requires a press of START before the reels even appear.
Wins come in clusters with subsequent drops. At a fixed bet of 1,00 the WIN field showed, among others, 0,50, 0,75, 0,90, 1,15, 2,15, 2,25, 2,95, 3,95 and 5,45 — the largest came from a long chain of trophy and hourglass symbols.
To the left of the reels sit two buttons, Bonus Bet and Buy Feature. Buy Feature would not open its price dialog in the server's headless client, so no purchase price is listed — only the wins that actually appeared on the screen.
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.
Game rules
Base game
The game is played on a 6-5 reel set. The published return is 95,74 %, and volatility is listed as high.
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.
Key figures and payouts
| Key figures | Value in our catalog data |
|---|---|
| RTP according to catalog data | 95,74 % |
| Volatility | High |
| Max win | 2.500× |
| Ways to win | Not disclosed |
| Reel set | 6-5 |
| Min. indsats | 0,2 € |
| Max. bet | 20 € |
| Win frequency | Not disclosed |
| Provider | RTG |
| Released | 13. maj 2026 |
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.
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What is the RTP in Olympus Thunderhold?
The provider's sheet states an RTP of 95,74 percent, which is below the market standard of around 96, held by most competing Olympus titles.
What is the max win?
The max win is stated as 2500 times the stake. It's a low ceiling compared with the rest of the pool.
Does the game include a Hold and Win feature?
No, despite the name. The feature list is built on cascades, Scatter Pays, Free Spins and multipliers, but not on locked symbols.
Can the bonus round be bought?
Yes, the feature list includes Buy Feature as well as Bonus Bet. The purchase price is not shown in the provided data.

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Screenshots from Olympus Thunderhold


Game rules
Frequently asked questions