Yggdrasil casino games

Yggdrasil: profile of a Malta and Kraków slot studio

Yggdrasil was founded in 2013 and takes its name from the world tree of Norse myth, a fitting choice for a studio whose best-known games feature Vikings. Today it has offices in San Ġiljan, Malta and Kraków, Poland, and its chief executive is James Curwen. Reference listings put its catalogue at about 190 games, making it a mid-sized supplier among the names on our providers hub.

Yggdrasil holds licences in four jurisdictions: Great Britain, where it has a remote casino licence for business-to-business supply; Malta, under MGA/B2B/230/2012; Gibraltar; and the Isle of Man. Business-to-business means it supplies casinos rather than taking bets from players directly; your account is always with the casino.

Best-known Yggdrasil casino games with published figures

The figures below are from our verified slot records. Yggdrasil games can come in more than one version, so the RTP in the help screen at your casino is the one that counts.

Golden Fish Tank is another of the studio’s best-known titles, but we hold no verified figures for it. The spread in the table is useful: Jackpot Raiders is rated low volatility while Valley of the Gods is high, even though their RTPs differ by only 0.1 percentage points. That shows why RTP alone does not tell you how a game will feel.

The Vikings series: Yggdrasil’s signature games

Vikings Go Wild, released in August 2015, introduced a band of Norse raiders on a 5x4 grid with 25 paylines and low-to-medium volatility. Vikings Go Berzerk followed in November 2016 with higher volatility and a free spins round where the Vikings fill a rage meter and, once it is full, turn wild for the rest of the round. The series became one of the studio’s calling cards.

Comparing the two in pounds is instructive. Over a very long run, £100 staked on the 96.3% game costs about £3.70, and on the 96.1% game about £3.90, a difference of 20p. The bigger difference is in the ride: the Berzerk game is designed to pay less often and more when it does. Our guides to volatility and slot hit frequency explain the distinction.

Valley of the Gods: how a growing grid works

Valley of the Gods starts with most of its 5x5 grid hidden behind blocks. Wins trigger respins and break blocks open, so the ways to win grow from 45 up to 3,125 as more of the grid is revealed. Clear enough of it and bigger features open. It is an early example of the expanding-grid design now common across the industry.

1. A paid spin plays on the open centre of the grid with 45 ways.
2. A win breaks the blocks next to it and awards a respin.
3. Each further win in the respins opens more of the grid.
4. Fully opening the grid gives 3,125 ways.
5. When a respin produces no win, the grid resets for the next paid spin.

Only the first spin costs a stake. Because each sequence is one game cycle, the UK’s 2.5-second rule measures from the start of one paid spin to the next, not per respin. Our spin speed limit page explains the timing, and ways to win in our glossary covers the counting.

YGG Masters: other studios’ games on Yggdrasil’s platform

YGG Masters is Yggdrasil’s partner programme, through which independent studios release games using its technology and distribution. Its website lists 21 partners. Two studios on our site are linked to the Yggdrasil network: Avatar UX, whose early games such as CherryPop reached casinos this way, and Peter & Sons, which trade coverage connects to YG Masters and which has used Yggdrasil’s DoubleMax mechanic, where a multiplier builds with consecutive wins in a chain.

When a partner game loads with a Yggdrasil logo, the help screen still names the actual developer. Our aggregator glossary entry explains how distribution platforms differ from studios.

Is Yggdrasil licensed in the UK?

Yes. Our facts record a Great Britain remote casino licence for business-to-business supply. We do not hold the register account number, so we do not quote one; you can search the Commission’s register of gambling businesses (opens in a new tab) for Yggdrasil to see the current entry and its status. The casino you play at needs its own licence too, which should be shown in its footer. Our guide to reading a casino footer shows where to look.

UK rules that apply to Yggdrasil casino games

Yggdrasil slots at UK-licensed casinos meet the Commission’s game design rules, in force since 31 October 2021: no autoplay, at least 2.5 seconds per spin, no turbo or slam-stop and no celebrating a return equal to or below the stake. The Commission explains its reasoning in the online games design consultation response (opens in a new tab).

Since 9 April 2025 the maximum stake per spin is £5 for players aged 25 and over, and since 21 May 2025 it is £2 for those aged 18 to 24. On a 25-line game like Vikings Go Berzerk, a £2 total stake is 8p per line. Bonus buy features are not part of the games supplied to Great Britain; our no bonus buy page explains that this is a matter of supply rather than a dated rule. See also our £2 slot stake limit page.

Finding Yggdrasil games in a UK casino lobby

Our partner facts do not list which studios each casino carries, so search by title: Vikings Go Berzerk, Valley of the Gods or Jackpot Raiders. Where provider filters exist, Yggdrasil is usually listed by name, and partner studios may appear separately. You must be logged in and age-verified before a demo will load, a rule in place since May 2019. Our casino lobby guide explains common search tools.

Jackpot Raiders and low-volatility play

Jackpot Raiders, released in May 2019, is rated low volatility in our records, with a 96.3% RTP and a max win of 4,110x stake excluding jackpots. Low volatility means smaller, more frequent wins, so a budget generally lasts longer, though losses are still likely over time. The jackpots sit on top of the base-game ceiling. Our progressive jackpots explained guide and the question what happens when you hit a jackpot? cover the practical side.

Playing Yggdrasil slots with limits in place

Slots are entertainment that costs money, and the house edge means you should expect to lose over time. Decide on a budget and a time limit first; since 31 October 2025 UK casinos must prompt you to set a financial limit before your first deposit. If you want to stop completely, GAMSTOP (opens in a new tab) blocks all GB-licensed sites, and Gamblers Anonymous (opens in a new tab) runs free peer-support meetings. The National Gambling Helpline is on 0808 8020 133, 24/7.

Where to play Yggdrasil casino games

Our three partner offers were checked on 5 October 2026. All are for 18+ new customers with terms applying, and the spins are on games each casino chooses, not on Yggdrasil titles.

• Coral, 1 October 2026 to 1 February 2027: deposit and bet £10+ on slots for 100 free spins at 10p each on selected games. Accept within 48 hours, use within 7 days, no wagering on winnings. Neteller, PayPal, Paysafe, Skrill, prepaid cards and certain debit cards are excluded.
• Ladbrokes: deposit and spend £10+ on slots for 50 free spins a day over your first 10 days, up to 500, at 10p each. Claim before 23:59 daily; spins last 7 days; no wagering. Prepaid cards, PayPal, Paysafe, Neteller, Skrill and Moneybookers don’t qualify.
• PlayOJO: first deposit of £10+ for 80 free spins on Big Bass Bonanza at 10p each, with winnings paid in cash and no wagering. UK only, excluding Northern Ireland.

Coral and Ladbrokes are both run by LC International Limited, so check whether you can open new accounts at both. Our latest casino offers page compares all five partners.

18+. Gambling should be entertainment that costs money, not a way to make it. Set a deposit limit before you play: how to set deposit limits. Free, confidential help: National Gambling Helpline 0808 8020 133.