Siberian Storm slot

What is the Siberian Storm slot machine?

Siberian Storm is a video slot from IGT, the Las Vegas company better known in casinos for its cabinets than online. IGT is now owned by funds managed by Apollo, since 1 July 2025, and has been combined with Everi; its history is summarised on Wikipedia's IGT page (opens in a new tab). Siberian Storm is set in a frozen forest, with white tigers as its signature symbols, and it sits among the better-known animal slot machines.

Two things make it different from a standard five-reel video slot. Its reels are different heights, giving a diamond-shaped grid, and its ways pay from either end. Both are explained below with worked numbers. It is also one of the slots where the RTP setting varies most between versions, which changes the cost of play noticeably.

How Siberian Storm's 720 ways work

The five reels hold 3, 4, 5, 4 and 3 symbols. Multiplying those gives the number of left-to-right paths: 3 × 4 × 5 × 4 × 3 = 720. Any run of matching symbols on adjacent reels pays, whatever row each symbol sits in, as on other ways-to-win slot machines.

Siberian Storm also pays both ways: a run can start from reel 5 and read right to left as well as from reel 1. A three-of-a-kind on reels 3, 4 and 5 that wouldn't pay in a left-to-right game can pay here. The help screen explains how a five-reel run that reads both ways is counted, so check it if you want the precise rule.

Because the middle reel is the tallest, it's in every winning run of three or more in either direction, and it shows the most symbols. If you want a simpler example of the ways sum, see what 243 ways means.

Playing a Siberian Storm spin

1. Set a stake within the UK limit of £5 a spin (or £2 if you are aged 18 to 24).
2. Spin. The random number generator fixes every reel position before the animation starts.
3. The game checks 720 paths from the left and 720 from the right for runs of three or more.
4. Wilds substitute for paying symbols where the rules allow; the paytable shows which symbols they can replace.
5. If the bonus symbols land in the pattern the paytable describes, the free spins begin.
6. Wins and your session net position are shown.

Siberian Storm free spins and bonus

The Siberian Storm bonus is a round of free spins started by the game's bonus symbols. The trigger is usually described as one bonus symbol on each of the five reels, and the round can be retriggered. We haven't verified the number of spins or the retrigger limit, and versions can differ, so read the paytable for the exact rule rather than relying on a summary.

Free spins on a medium-volatility game like this tend to add a moderate boost rather than an all-or-nothing outcome. The 720 ways in both directions continue during the round, so stacked tigers can pay on many paths at once.

Siberian Storm RTP: why the version matters

Siberian Storm's RTP varies by version from 92.52% to 96%. A casino chooses which version to run from the settings the supplier offers, and the RTP variants page explains why studios do this. The difference between the two ends of the range is large: the house edge is 7.48% on the lowest version and 4% on the highest, almost double.

Over 1,000 spins at 50p, that is £500 staked and an average cost of about £37.40 on the lowest version against £20 on the highest. Any single session can still swing well away from those averages, but over many sessions the version is the biggest single factor in what the game costs you. Our guide to reading slot RTP in the UK explains how to compare versions.

How to check the Siberian Storm RTP at your casino

UK-licensed operators must make game rules and return information available, under the Gambling Commission's standard on game descriptions and the likelihood of winning (opens in a new tab). To find the figure:

1. Open Siberian Storm in real-money mode (or demo, if the casino says the demo uses the same version).
2. Tap the menu, help or 'i' icon.
3. Open the game rules and scroll to the return to player section.
4. Note the percentage. If it's near 92.52%, you're on a low version; near 96%, a high one.
5. If you prefer a lower cost, look for the game at another casino or pick a different game.

Siberian Storm max win: what we can and can't say

Our checked facts don't include a maximum win for Siberian Storm, and figures quoted online vary by version, so we don't state one. The game's rules should show the largest prize or explain how prizes are capped. As a guide to scale, every payout scales with stake: a win of 100x your stake is £20 at 20p, £200 at £2 (the limit for 18 to 24-year-olds) and £500 at £5. Read more on max win caps.

Is Siberian Storm worth playing? Volatility and who it suits

Rated medium volatility, the game tends to pay a mix of small and mid-sized wins, with free spins adding a moderate lift rather than carrying almost all of the return. That makes it more predictable than a high-volatility game, though no slot is predictable over a short session. It sits with other medium-volatility slot machines.

It suits players who prefer a calmer pace and who will take the time to check the RTP version. It suits less well anyone who won't check, because the low version costs almost twice as much per pound staked.

Siberian Storm myths and facts

• Myth: paying both ways doubles the RTP. The RTP already includes both directions. Paying both ways spreads wins differently; it doesn't add to the return.
• Myth: four bonus symbols means the fifth is due. Each spin is independent. See are slot machines rigged for how fairness is tested.
• Myth: all casinos run the same Siberian Storm. Versions range from 92.52% to 96%.
• Fact: the RNG decides before the reels stop. There's no timing or button trick; see can you trick a slot machine.

UK rules, the demo and Siberian Storm in land-based venues

Online, Siberian Storm follows the UK slot game design rules: no autoplay, at least 2.5 seconds per spin, no turbo and no celebrating returns of the stake or less. A Siberian Storm demo is available as free demo play, after age verification, at casinos that offer demos.

IGT also builds machines for land-based venues, where games run under the UK gaming machine categories rather than the online rules. We can't confirm which IGT titles are installed in any British venue, so treat what you find in a casino as its own machine with its own label.

More on the differences is in online vs land-based slots and on casino slot machines.

Slots similar to Siberian Storm

For other IGT games, see Cleopatra, Da Vinci Diamonds and Wolf Run. For another wildlife game on a ways grid, try Raging Rhino, and for both-ways lines on a classic layout, Starburst.

Where to play the Siberian Storm slot in the UK

We can't confirm that our partners carry Siberian Storm, or which RTP version they run; search each lobby and check the rules, as the range changes. Coral gives new players 100 free spins after a deposit and £10 of slots bets: 10p each on selected games, accept within 48 hours, use within 7 days, no wagering on winnings. Ladbrokes gives new customers 50 free spins a day for the first 10 days, up to 500, after they spend £10 on slots; spins are 10p on selected games, claimed by 23:59 daily, valid 7 days and wager-free.

PlayOJO gives new UK customers (excluding Northern Ireland) 80 free spins at 10p on Big Bass Bonanza with a first deposit of at least £10, paying winnings as cash. Each offer is 18+, terms apply and some deposit methods don't count. Coral and Ladbrokes are run by the same company, so check before opening both. If you need to talk, GamCare (opens in a new tab) runs the free National Gambling Helpline on 0808 8020 133.

18+. Gambling should be entertainment that costs money, not a way to make it. Decide a budget before you play: plan a slot budget. Free, confidential help: National Gambling Helpline 0808 8020 133.