Yggdrasil slots

Who makes Yggdrasil slots?

Yggdrasil is a slot studio founded in 2013. It has offices in San Ġiljan, Malta, and Kraków, Poland, and is led by chief executive James Curwen. It is licensed to supply games in Great Britain (remote casino, business to business) and also holds licences in Malta (MGA/B2B/230/2012), Gibraltar and the Isle of Man. Reference listings put its catalogue at about 190 games.

The name comes from the tree at the centre of Norse mythology, and Norse themes run through some of its most famous games. But the studio’s range is wider than Vikings: Egyptian, detective and underwater games all sit in the catalogue, and its artwork is consistently among the most detailed in a UK lobby.

In-house games and YGG Masters partners

Yggdrasil publishes two kinds of game. Its own studio builds the in-house titles. Through YGG Masters, its partner programme, independent studios create games that Yggdrasil distributes; the programme’s site lists 21 partners. Partner games appear in the same lobby rows and may carry the Yggdrasil name, but their maths and design come from the partner.

Distributed studios have included teams that later became well known in their own right; Avatar UX, maker of the PopWins mechanic, had early distribution through the Yggdrasil network. If you liked or disliked a Yggdrasil-labelled game, check which studio actually made it before assuming the next one will feel the same.

Yggdrasil’s own mechanics include Gigablox, which drops oversized blocks of a single symbol onto the reels.

Best-known Yggdrasil slots with published figures

Golden Fish Tank is another of the studio’s best-known games; we don’t yet hold verified figures for it. Notice how compact the RTP range is, 96.1% to 96.8%, and how wide the volatility range is. That makes Yggdrasil a useful studio for matching a game to your budget rather than chasing a single style.

The Viking games: one theme, two different experiences

Yggdrasil’s Viking titles show how much the maths can change under the same theme.

• Vikings Go Wild (2015) is low to medium volatility at 96.3%, with 25 paylines on a 5×4 grid and a free spins round built around its Viking characters. It is the gentler of the two.
• Vikings Go Berzerk (2016) raises the volatility to medium–high. In free spins each Viking has a rage meter; fill it and that Viking goes berzerk, turning wild for the remaining spins.

If you are browsing the theme across all studios, our Norse slots page compares Yggdrasil’s Vikings with games from NetEnt, Play’n GO and others.

How Valley of the Gods changes the grid

Valley of the Gods is the clearest example of Yggdrasil’s willingness to experiment. Its 5×5 grid starts with most positions blocked. Winning combinations unlock blocked positions and award respins, and as the grid opens the number of ways to win rises from 45 to as many as 3,125.

This makes the game high volatility: a spin with no win leaves the grid mostly closed, while a chain of wins can open it fully. The 5,800x cap is moderate by modern standards, which is a reminder that high volatility and a huge max win don’t always go together. Our reel modifier glossary entry covers mechanics that change the grid during play.

Yggdrasil slots in pounds: low vs high volatility

Take £30 at 15p a spin, 200 spins, on two Yggdrasil games:

The expected cost is almost identical. What differs is how likely you are to finish near your starting balance: much more likely on the low-volatility game. Over time both are expected to cost money, and any single session can depart sharply from the averages.

How to find Yggdrasil slots and check who made them

1. Use the casino’s provider filter and select Yggdrasil, or search a title such as Vikings Go Berzerk.
2. Open the game and look at the loading screen: in-house games show the Yggdrasil logo, partner games usually show their own.
3. Read the help screen for the RTP, which can be lower than the developer’s published figure at some casinos.
4. Note the volatility, or infer it from the paytable and max win if no rating is shown.
5. Set a session budget before staking real money.

UK rules that apply to Yggdrasil slots

In Great Britain, every Yggdrasil game follows the standard slot rules: £5 maximum stake per spin for over-25s and £2 for 18 to 24-year-olds, a 2.5-second minimum per spin, no autoplay, turbo or slam-stop, no feature buy, and demos only after age verification. These rules apply to partner games published by Yggdrasil too.

Where to play Yggdrasil slots in the UK

Yggdrasil games are offered by many UK-licensed casinos, but we don’t record which studios each partner carries, so check the lobby search first. Clear welcome terms: 10bet matches your first deposit 100% up to £25, with 10x wagering on slots within 3 days and £1,000 maximum bonus winnings; Casumo gives a 50% bonus up to £100 on a £20+ first deposit, with 10x wagering in 7 days; Coral gives 100 spins at 10p after a £10 slots bet, with no wagering. 18+, new customers, T&Cs apply.

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