ELK Studios slots on mobile

ELK Studios slots on mobile: what sets them apart

ELK Studios builds slots that rarely look like a standard five-reel game. Grids expand during a spin, symbols drop in from above, and in the Pirots series four birds wander around the board collecting gems. Those moving parts make ELK games distinctive, and they also make screen size more noticeable than with a classic 5x3 slot.

On a phone, the games load inside your casino app like any other HTML5 slot. You don't install anything from ELK itself, and the maths is the same as on desktop.

This page belongs to our slot providers section. If you like ELK's style, the Nolimit City and Hacksaw Gaming pages cover studios with similarly busy, high-volatility designs.

ELK Studios licence and company details

ELK was founded in 2013 and is based in Stockholm. It trades through two licensed companies, ELKAB Studios AB and ELK Studios Malta Ltd, and supplies British casinos under Gambling Commission account 40844. You can look up any supplier's account on the Commission's public register of businesses (opens in a new tab).

A supplier licence matters because the casino app is not the only party responsible for a game's fairness. The studio that builds the game and its random number generator has to meet the Commission's technical standards too. Our guide to how casino apps are licensed in the UK explains the operator side.

ELK Studios games on mobile: RTP, volatility and max win

These are the ELK titles with verified specifications. Notice how many sit at 94%: that is a design choice across the Pirots series and Reindeer Royale, and it is lower than many slots from other studios.

Our full reviews cover Wild Toro, Cygnus, Nitropolis, Pirots and Pirots 2. Casinos can run different RTP versions of some games, so the in-game help screen is the final word.

How Pirots works: birds instead of paylines

Pirots has no paylines. Four coloured parrots sit on a 5x5 grid and move around it, collecting neighbouring gems of their own colour. Wilds, upgrades, transforms, coins and bombs add to the action, and each collected symbol fills a feature meter. The grid can grow to 8x8.

Collect three bonus symbols and you get five Free Drops. During them, the grid size, symbol collection and gem levels carry over from one drop to the next, and three more bonus symbols add extra drops.

Pirots 2 starts on a bigger 6x6 grid, again growing to 8x8. Feature symbols upgrade gem values, award coin prizes, expand the board or shuffle the birds, and three Dino Skull scatters in a round give 5 Free Drops. Pirots 3 moves to an 8x7 grid with reel expansions and a coin bonus.

Every Pirots game has a published RTP of 94%. The collecting mechanic is fun to watch, but it does not change the long-run cost: about £6 of every £100 staked is kept on average.

Avalanches and growing grids in Cygnus and Nitropolis

Cygnus starts on six reels of four rows, giving 4,096 ways to win. Each win removes the winning symbols in an avalanche and adds a row, up to 8 rows and 262,144 ways. Multiplier symbols raise a win multiplier that lasts for the rest of the spin.

Its Free Drops round starts when a bonus symbol reaches the leftmost column. You get 7 free drops on the fully expanded grid, and any multipliers already active stay for the whole round.

Nitro Reels in Nitropolis

Nitropolis uses Nitro Reels, which can appear on any reel and pack several matching symbols into one position. That pushes the ways to win from 4,096 up to as many as 85,155,840. Wins trigger respins for as long as new wins land. Three to six scatters give 10 to 25 free spins, with a random symbol becoming a scatter-paying symbol and every Nitro Reel locked in place.

Ways-to-win games are explained in our Megaways glossary entry, which covers the related idea of reels that change height.

Walking wilds in Wild Toro

Wild Toro, released in 2016, is built around respins rather than a free spins round. A Toro wild landing on reel 5 becomes a walking wild and moves one reel to the left with each respin.

If the Matador appears, the bull charges at him and leaves a trail of extra wilds. Matador symbols on reels 2, 3 and 4 also trigger sticky respins, and each new Matador adds another respin.

At 96.4% RTP and a 2,250× maximum, Wild Toro is the most conservative ELK game in our table. It suits players who prefer more modest swings over a chase for a very large top prize.

What the RTP gap costs in pounds

Expected loss is the amount staked × (100% − RTP). It is a long-run average, so a short session can come in well above or below it, especially on high-volatility games.

£100 of turnover comes round faster than you might expect. At 50p a spin it takes just 200 spins, so a long evening on a 94% game costs roughly two-thirds more, on average, than the same session on Wild Toro.

Reading ELK's max wins

A max win is a cap on what one spin or round can pay, not a likely result. At a 10p stake, 10,000× is £1,000; at the UK maximum of £5 for players aged 25 and over, the same cap is £50,000. Reindeer Royale's 25,000× works out at £2,500 on a 10p spin. Very few sessions ever get close to these figures.

To see how volatility shapes a session, read our answer to what volatility means on a slot app.

Playing ELK Studios games on a phone

ELK's expanding grids are where screen size starts to matter. A 5x3 slot is easy to read on any phone, but an 8x8 Pirots board or a Cygnus grid at eight rows packs many symbols into a small space.

1. Open the casino app on Wi-Fi or a strong mobile signal, since the game streams in when you start it.
2. Search the lobby for the game name, such as Cygnus or Pirots, rather than for ELK.
3. Read the help screen before your first spin to check the RTP and how the features work.
4. Rotate your phone to see whether the game offers a larger layout in landscape or portrait; this varies by game.
5. Set your stake and a deposit limit, and keep an eye on the net spend and time display that UK rules require.

If text or symbols feel too small, a tablet gives the grid more room. Our phone vs tablet comparison weighs up the trade-offs, and the Android phones guide covers installing casino apps on Android.

UK rules for ELK Studios slots in British apps

Games for British players follow the Commission's remote technical standards for product design (opens in a new tab). Since 31 October 2021, slots can't offer autoplay, turbo or slam-stop, must take at least 2.5 seconds per spin and must not celebrate a return equal to or below your stake.

Some features in ELK games may differ from the versions sold in other countries. In particular, since a Gambling Commission warning in January 2020, feature buy-ins are not offered to British players. The Commission's games warning for online operators (opens in a new tab) explains the background.

Stakes are capped at £5 a spin for players aged 25 and over and £2 for 18 to 24-year-olds. Our explainer on why there is no autoplay on UK casino apps covers how these rules change what you see on screen.

Casino apps with a slot welcome offer

We don't have an offer linked to ELK Studios. The partner apps below each have a slot welcome offer for new customers aged 18 or over, with terms applying. Their spins are for selected games set out in the terms, and whether any ELK title is in their lobbies is not published, so check the app.

• PlayOJO: make a first deposit of £10 or more and get 80 free spins on Big Bass Bonanza at 10p each. There is no wagering, so any winnings are paid in cash. New UK customers only (not Northern Ireland); it can't be combined with other offers and is available only through the designated offer link.
• Coral Casino: deposit (certain types excluded) and bet £10 or more on slots to get 100 free spins, 10p each, on selected games. You have 48 hours to accept them and 7 days to use them, and winnings have no wagering. Neteller, PayPal, Paysafe, Skrill, prepaid cards and certain debit cards don't qualify; the offer runs from 1 October 2026 to 1 February 2027.
• Ladbrokes Casino: deposit and spend £10 on slots to get 50 free spins a day for your first 10 days, up to 500 in total, at 10p each on selected games. Claim each day's spins before 23:59; they last 7 days and have no wagering. Deposits made by prepaid card, PayPal, Paysafe, Neteller, Skrill or Moneybookers won't count.

In stake terms, that is £8 of spins at PlayOJO, £10 at Coral and up to £50 at Ladbrokes. Coral and Ladbrokes are both run by LC International Limited, so you may not be able to hold new accounts at both. Our PlayOJO app review covers its no-wagering approach in more depth.

18+. Every casino game has a built-in house edge, so over time you should expect to lose what you stake. Set a budget before you play and stop when it’s gone: safer gambling tools and support. Free, confidential help: National Gambling Helpline 0808 8020 133.