Asgardian Stones

Q: What is the RTP of Asgardian Stones?

The reference value published by NetEnt is 96.31%. But this title belongs to the part of the catalogue shipped to operators in several RTP tiers, and SlotCatalog explicitly flags alternative versions; a certified build around 94.98% is in circulation. On a game whose base play already returns little, a point and a half less weighs heavily over a session. The rate actually applied can be read in the rules opened from within the casino.

6.5/10

Release February 2018· Updated August 2026

5x3, 20 lines, 96.31% RTP — NetEnt's Norse Avalanche, gorgeous and tight-fisted

RTP

96.31%

Volatility

Low

Max Win

1 000x

Grid

5x3

Bonus Buy

AvalancheSymboles ColossauxColossal CrushRoue bonusFree SpinsWild colossalPaliers de RTP

Play the free demoOfficial NetEnt demo · no signup, no real money

6.5

BetsRank Verdict

Our read of the game, based on the data the studio publishes

Asgardian Stones is one of the best-looking games NetEnt ever shipped, and also one of the most frustrating. The Norse stonework, the carved symbols, the animation of blocks smashing down: visually this is a 2018 studio at the peak of its craft. The problem sits underneath. Base play runs on a standard Avalanche engine — winning symbols explode, new ones drop in — onto which NetEnt grafted Colossal symbols. Any symbol can land as a 2x2 block, and Odin as a 3x3, which fills a large chunk of a grid that is only 5x3 to begin with. Colossal Crush then smashes the rows beneath the block and pushes a side multiplier upward. On paper it is excellent. In practice that multiplier caps at 4x, and a 20.1% hit rate on a cascading game is thin: chains die quickly, and the base game has a well-earned reputation for not returning enough to fund the wait for the bonus. The bonus itself is a wheel, which does not help. You need the Bonus Wheel symbol across reels 3, 4 and 5, and the outcome is drawn: sometimes a cash prize, sometimes 5, 10 or 15 free spins. Walking away from a rare trigger with five spins is an unpleasant experience, even though the wheel can come back during the feature to add up to 25 rounds. The point to watch is the numbers. NetEnt publishes 1,000x the stake as maximum win on its own page; SlotCatalog says 2,000x, BigWinBoard 2,400x. Three sources, three ceilings: this page keeps the provider's and flags the disagreement. Same story on RTP — 96.31% as the reference, but Asgardian Stones belongs to the catalogue shipped in several tiers, with a certified build around 94.98% in circulation. On a game whose base play is already stingy, losing another point and a half genuinely changes the arithmetic.

Strengths

+Outstanding art direction: Norse stonework, carved symbols, meticulous block animations
+Colossal 2x2 blocks available on every symbol, plus a super colossal Odin at 3x3
+Colossal Crush: blocks smash the rows beneath them and push a side multiplier up to 4x
+In free spins the Wild lands colossal and splits into individual 1x1 Wilds when it joins a win
+Stakes from €0.20 to €200 per spin, with a fully free Avalanche engine

To consider

−Base game known for being stingy: only a 20.1% hit rate for a cascading machine
−Colossal Crush multiplier capped at 4x, very low for this kind of mechanic
−The bonus runs through a wheel: you can walk away with just 5 free spins, or a plain cash prize
−Three different win ceilings depending on the source: 1,000x at NetEnt, 2,000x at SlotCatalog, 2,400x at BigWinBoard
−RTP tiers shipped to operators, including a build around 94.98%

Asgardian Stones in detail

Asgardian Stones was released on 22 February 2018 according to NetEnt's official page. SlotCatalog distinguishes a limited release on 19 February from a wide release on the 22nd: the BetsRank record carried the 19th and now keeps the provider's date. That kind of drift is common across NetEnt's pre-2020 catalogue, where aggregator dates routinely diverge by a few days — and by several years on the older titles. The grid is 5 reels by 3 rows with 20 fixed paylines. It is a compact format, and that choice has direct consequences for everything else: when a 2x2 Colossal symbol drops, it already occupies four of the fifteen visible positions. Odin, the super colossal symbol, takes nine of fifteen on his own. On a grid this small those blocks are not decorative gimmicks, they completely reorganise the draw. The engine is an Avalanche. Symbols in a winning combination vanish and the symbols above drop to fill the gaps, which can chain several wins from a single paid spin. From the first avalanche onward, Colossal Crush can activate in both base play and free spins: a new colossal block drops and crushes the rows of symbols beneath it. A multiplier displayed at the side of the reels climbs with each consecutive win obtained this way, from 2x to 4x. That 4x ceiling is the main mechanical complaint you can level at the game: other cascading machines released the same year let the multiplier climb far higher. The blue Wild substitutes for every symbol except the bonus wheel. One important quirk: in base play it only appears at normal size, whereas in free spins it lands colossal and splits into individual 1x1 Wilds as soon as it joins a winning combination. That is what separates the two modes in terms of return. The bonus triggers when the Bonus Wheel symbol occupies a 3x3 block across reels 3, 4 and 5. The wheel then spins and awards either a cash prize or free spins — 5, 10 or 15 depending on the section landed. The wheel can retrigger during free spins and add up to 25 extra rounds in total. The system is generous in its ceiling but disappointing in its average: a trigger that hands over five free spins after a long wait leaves a bitter taste. Official numbers: 96.31% RTP, 1,000x the stake as maximum win, a 20.1% hit rate, and stakes from €0.20 to €200 per spin. Maximum win is the most contested figure on this game — SlotCatalog shows 2,000x, BigWinBoard 2,400x — and this page keeps the value NetEnt publishes. On RTP, Asgardian Stones is one of the titles shipped in several tiers: a certified build around 94.98% exists. There is no bonus buy, the feature not yet being established in the industry in 2018.

Asgardian Stones features

▸Avalanche engine: winning symbols vanish, new ones drop, and several wins can chain from a single paid spin.
▸Colossal symbols: any symbol can land as a 2x2 block, which already occupies four of the grid's fifteen positions.
▸Super colossal Odin: a 3x3 block covering nine of the fifteen visible positions on its own.
▸Colossal Crush: from the first avalanche onward a colossal block can crush the rows beneath it, with a side multiplier climbing from 2x to 4x.
▸Blue Wild: substitutes for every symbol except the bonus wheel, and only appears colossal during free spins.
▸Bonus wheel: the Bonus Wheel symbol as a 3x3 block on reels 3, 4 and 5 spins a wheel awarding a cash prize or 5, 10 or 15 free spins.
▸Retrigger: the wheel can return during the bonus round and add up to 25 free spins in total.

❓Frequently asked questions about Asgardian Stones

What is the RTP of Asgardian Stones?▾

The reference value published by NetEnt is 96.

31%. But this title belongs to the part of the catalogue shipped to operators in several RTP tiers, and SlotCatalog explicitly flags alternative versions; a certified build around 94. 98% is in circulation. On a game whose base play already returns little, a point and a half less weighs heavily over a session. The rate actually applied can be read in the rules opened from within the casino.

What is the maximum win?▾

This is the most disputed figure on the game.

NetEnt publishes 1,000x the stake on its own page, which is €200,000 at the €200 maximum bet. SlotCatalog says 2,000x and BigWinBoard 2,400x. Three serious sources, three different values: we keep the provider's, since nothing available lets us settle it otherwise. In every case the ceiling stays low for a cascading game.

How does Colossal Crush work?▾

From a spin's first avalanche onward, a new colossal symbol can drop and crush the rows of symbols beneath it.

Each consecutive win obtained this way pushes up the multiplier displayed at the side of the reels, moving from 2x to 4x. That 4x ceiling is low compared with rival cascade mechanics of the same era, and it is the main mechanical criticism you can level at the game.

How do you trigger the free spins?▾

The Bonus Wheel symbol has to occupy a 3x3 block across reels 3, 4 and 5.

The wheel then spins and the result depends on which section stops in the active area: it can be a cash prize, or 5, 10 or 15 free spins. There is therefore no guarantee of getting free spins at all when you trigger the bonus, which is a regular source of frustration.

What changes in free spins mode?▾

The Wild appears colossal there, which it never does in base play.

When that colossal Wild joins a winning combination it splits into individual 1x1 Wilds that stay on the grid for the following avalanches. That is the real return driver of the round. The bonus wheel can also retrigger during free spins and add up to 25 rounds in total.

Is Asgardian Stones volatile?▾

Sources place it between low and medium: SlotCatalog says "Low-Med", BigWinBoard "Low/Medium", other databases simply "Medium".

The hit rate published by NetEnt is 20. 1%, roughly one spin in five. In practice the game produces plenty of small avalanche wins that fail to cover the stake, and the in-session feel is of a drier machine than its rating suggests.

Is there a bonus buy on Asgardian Stones?▾

No.

The game dates from February 2018, a period when bonus buy was not yet an industry standard, and NetEnt never published a revised build including it. There is no ante bet option to raise the wheel's frequency either. The only route to the bonus remains the 3x3 block on reels 3 to 5, which explains how long sessions can run without a bonus round.

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Slot sheet last updated on August 18, 2026 · Sources: slotcatalog.com, official studio sites