Mount Magmas free spins from a casino are worth close to face value on average: at Push Gaming's 96.5% RTP, 100 spins at 10p (£10 of play) return about £9.65 over the long run. The game also has its own bonus features, and the paytable in the version you open is the place to confirm how they start.
Mount Magmas has a 96.5% RTP, medium volatility and 20 fixed paylines on a 5 × 4 grid.
A 10p casino spin covers all 20 lines; 100 spins average about £9.65 back.
With 10x wagering, the expected value of that £9.65 falls to about £6.27.
Our partners don't list Mount Magmas for their spins; PlayOJO's 80 spins are on Big Bass Bonanza.
18+, terms apply; UK bonus wagering is capped at 10x since 19 January 2026.
Developer
Push Gaming
RTP
96.5%
Volatility
Medium
Layout
5 reels × 4 rows
Ways to win
20 fixed paylines
Released
2021
Mount Magmas free spins in brief
Push Gaming released Mount Magmas in 2021: a volcano-themed game with five reels, four rows and 20 fixed paylines. When people look up Mount Magmas free spins, they are either weighing up a casino offer of spins they could use on it, or trying to find out how the slot's own bonus round works. The casino version has terms; the game version has rules in the paytable.
We take the money side first, because that is where offers differ, then the game's features and the UK rules. If you're comparing spin offers in general, the free spins hub lists every type.
Mount Magmas RTP of 96.5% in pounds and pence
An RTP of 96.5% means that over a very large number of spins the game returns £96.50 for every £100 staked, so the house edge is 3.5%. Applied to typical casino spin allowances at 10p a spin:
Mount Magmas free spins value at 96.5% RTP
Spins
Face value
Average return
House edge cost
40
£4
£3.86
14p
50
£5
£4.83
17p
80
£8
£7.72
28p
100
£10
£9.65
35p
500
£50
£48.25
£1.75
These are averages over the long run. A single batch of 50 or 100 spins can return far less or far more. The house edge entry explains why the cost scales with the amount staked, not the number of wins.
How a 10p spin is spread across 20 paylines
Mount Magmas uses 20 fixed paylines, which means every spin plays all 20. A casino spin of 10p is the total bet, so each line effectively carries half a penny. Wins are paid as multiples of the line bet or total bet depending on how the paytable is written, and the game's information screen shows the amounts in pounds at your current stake.
For offer value, the detail rarely matters: the face value is still 10p a spin and the RTP still applies to the whole stake. It does matter if an offer lets you choose your own stake from a bonus balance, because the stake you pick then changes how fast you work through wagering and how much each spin can win.
Mount Magmas compared with other Push Gaming slots
Push Gaming is a London-based studio best known for games such as Jammin' Jars, Razor Shark and Big Bamboo. Here is how the same 100 casino spins compare on four of its titles.
100 spins at 10p on Push Gaming slots
Slot
RTP
Volatility
Average return on £10
Mount Magmas
96.5%
Medium
£9.65
Jammin' Jars
96.83%
High
£9.68
Razor Shark
96.70%
High
£9.67
Big Bamboo
96.13% (a 94.13% version exists)
High
£9.61
The averages are within a few pence of each other; the real difference is volatility. Mount Magmas is the medium-volatility option in this group, so 100 spins on it usually give a steadier ride than on Jammin' Jars or Razor Shark. Our Push Gaming free spins guide covers the studio in more detail.
Mount Magmas free spins no wagering vs wagering
Assume 100 spins return the average £9.65. As no-wagering winnings, that is cash. With 10x wagering, you would have to stake £96.50; at 3.5% that costs about £3.38 on average, leaving roughly £6.27. With 5x, the cost is about £1.69, leaving around £7.96.
What wagering does to £9.65 of Mount Magmas winnings
Mount Magmas free spins no deposit: are there any?
None of our partners offers Mount Magmas free spins no deposit, or any no-deposit bonus. These offers have become scarce at UK-licensed casinos and, where they appear, usually carry low caps and short expiry on one named game. Verification comes first in every case. Our page on whether you can get a bonus without depositing explains the alternatives.
How to trigger free spins on Mount Magmas
Push Gaming sets out the rules of Mount Magmas, including how its bonus round starts, how many spins it gives and what happens during it, in the game's help screen. The exact mechanics, any multipliers and the maximum win should be read from that screen in the version your casino runs rather than from summaries elsewhere. Third-party listings sometimes quote how often a bonus lands; the developer doesn't publish that, so leave it out of your reckoning.
Open Mount Magmas and tap the menu or information icon.
Find the page for the bonus or free spins feature and note what starts it.
Record how many spins are given and whether the round can be extended.
Look for the stated maximum win and the RTP for this version.
Close the screen and set your stake within the UK limit before playing.
A casino spin that lands the bonus normally plays the round at the casino spin's stake; read can free spins trigger the bonus round to see how those wins are treated under an offer.
Checklist before using a Mount Magmas bonus
Is Mount Magmas on the offer's selected games list?
Does your payment method qualify? E-wallets and prepaid cards are often excluded.
What is the spin value, and is there a cap on winnings?
Do winnings arrive as cash or bonus money with wagering?
How long do you have to accept and use the spins?
Our bonus mistakes guide covers the most common ways people lose spins they've qualified for, and free spins expiry explains the time limits.
UK rules that apply to Mount Magmas
Mount Magmas at UK-licensed casinos follows the Gambling Commission's slot design rules (opens in a new tab), in force since 31 October 2021: no autoplay, no turbo or slam-stop, at least 2.5 seconds per spin, and no celebrating a result that returns less than the stake. Stake limits of £5 per spin for those aged 25 and over (since 9 April 2025) and £2 for 18 to 24-year-olds (since 21 May 2025) cap bets on paid and bonus spins. Feature buys aren't offered on slots at UK-licensed casinos. Since 19 January 2026, bonus wagering can't exceed 10x and promotions can't mix products, so you won't be asked for a sports bet to earn slot spins. See mixed product promotion ban for that rule.
Where to use free spins similar to Mount Magmas free spins
We don't have a partner offer on Mount Magmas, as none of our partners names it as its spin game. The closest alternatives are wager-free spin offers on their own listed games. PlayOJO: 18+, new UK customers outside Northern Ireland, 80 free spins on Big Bass Bonanza after a first deposit of at least £10, 10p a spin (£8 of play), winnings paid in cash. Terms apply; details on the PlayOJO free spins page.
Coral: 100 free spins after a £10 deposit and £10 bet on slots, 10p each, 48 hours to accept, 7 days to use, no wagering. Ladbrokes: up to 500 free spins (50 a day for 10 days) after £10 of slots play, 10p each, no wagering, each day's spins claimed by 23:59. Both list their own selected games, so check the promotion page, and both exclude PayPal, Skrill, Neteller, Paysafe and prepaid cards. See Ladbrokes free spins for the daily schedule.
Only gamble what you can afford to lose. The National Gambling Helpline on 0808 8020 133 is free and open around the clock, and NHS gambling support (opens in a new tab) includes specialist clinics.
Coral and Ladbrokes are both run by LC International Limited (Entain). If you already hold an account with one Entain brand, you may not be able to open a new account with another; check the terms before signing up.
Significant terms: 18+. New UK customers (excluding Northern Ireland). First deposit only. Minimum deposit £10. 80 free spins on Big Bass Bonanza, £0.10 each. No wagering requirements; winnings paid in cash. Cannot be used with any other offer. Only available to players who arrive through the designated offer link. Full T&Cs apply. GamCare.org.uk
Read the PlayOJO reviewLicence: Skill On Net Limited, UKGC account 39326. Offer checked 5 October 2026.
Significant terms: 18+. New players only. Offer runs 01/10/2026 to 01/02/2027. Deposit (certain types excluded) and bet £10+ on slot games to get 100 free spins (selected games, £0.10 each, 48 hrs to accept, valid 7 days). No wagering on free spin winnings. Deposits by Neteller, PayPal, Paysafe, Skrill, prepaid cards and certain debit cards do not qualify. Restrictions and T&Cs apply. GamCare.org.uk
Read the Coral reviewLicence: LC International Limited, UKGC account 54743. Offer checked 5 October 2026.
Significant terms: 18+. New customers only, from 14/11/25 until further notice. Certain deposit methods excluded. Deposit and spend £10+ on slots for 50 free spins a day during the first 10 days after first deposit and registration (max 500, £0.10 each, selected games, claim before 23:59 each day, valid 7 days). No wagering. Prepaid cards, PayPal, Paysafe, Neteller, Skrill and Moneybookers deposits do not qualify. Restrictions and T&Cs apply. GamCare.org.uk
Read the Ladbrokes reviewLicence: LC International Limited, UKGC account 54743. Offer checked 5 October 2026.
18+. Gambling should be entertainment that costs money, not a way to make it. Decide a budget before you play: set a budget. Free, confidential help: National Gambling Helpline 0808 8020 133.
Frequently asked questions
What is the Mount Magmas RTP?
Mount Magmas has an RTP of 96.5%, so over a very long run it returns about £96.50 per £100 staked, with a house edge of 3.5%. That figure covers the whole game, including bonus features, and doesn't rise when you use casino spins. Check the information screen at your casino to confirm the version on offer. Our page on UK RTP information rules explains what casinos must show.
How do you trigger free spins on Mount Magmas?
The bonus round is started by the event set out in the game's help screen, which also says how many spins are awarded and whether they can be extended. Read it in the version your casino runs before you play. Feature buys aren't offered at UK-licensed casinos, so the only way in is landing the trigger during normal spins. Our explainer on how free spins work covers both meanings of the phrase.
What are 50 free spins on Mount Magmas worth?
Fifty spins at 10p are £5 of play, with an average return of about £4.83 at the 96.5% RTP. Medium volatility means results spread moderately around that figure: some runs return a pound or two, others more than the face value. If winnings had 10x wagering, expected value would fall to roughly £3.14. Compare the real Ladbrokes daily offer on our 50 free spins page.
Are there Mount Magmas free spins no deposit offers?
Not from our partners, none of which offers a no-deposit bonus. Such offers are uncommon at UK-licensed casinos and usually give a few spins on a single named game with a cap on winnings. Age and identity checks come first. Read the selected games list and cap before signing up for any of them. The do no deposit bonuses still exist page explains why they've become rare.
Is Mount Magmas high or low volatility?
It is listed as medium volatility, which sits between steady low-volatility games and swingy high-volatility ones. For a casino spin offer, that usually means a mix of smaller wins with some chance of a larger result from the bonus features. It doesn't change the average value of the spins, which is set by the RTP. Our volatility glossary entry explains the measure in plain terms.
Do Mount Magmas free spins need wagering?
Only if the casino offer says so; the slot itself has no say. No-wagering spins pay cash, while wagering spins pay bonus money that must be staked up to 10x before withdrawal, the cap in force since 19 January 2026. Our partners' spin offers are all wager-free, but none lists Mount Magmas. The free spins wagering explained guide works through more examples.
What is the Mount Magmas max win?
Push Gaming publishes the maximum win in the game's rules, and that is the figure to rely on, since it reflects the version on offer. Whatever the game's ceiling, a casino spin offer can set its own lower cap on winnings, which applies first. Check the offer's terms for a maximum win or conversion amount. Our free spins max win page explains the different ways caps appear in terms.
Who makes Mount Magmas?
Push Gaming, a London-based studio founded in 2010, with an office in Malta and a Gambling Commission licence for supplying Great Britain. LeoVegas Group, part of MGM Resorts, announced a majority stake in 2023. Its best-known slots include Jammin' Jars, Razor Shark and Big Bamboo. Each has its own RTP and volatility, so the same spins are worth slightly different amounts. See Push Gaming free spins.
Can I play Mount Magmas on my phone with free spins?
Usually, yes: casino spin offers generally work the same on mobile as on desktop, as long as the game is on the offer's selected list and you play through the same account. Stake limits, design rules and offer terms are identical on both. Check that the casino's app or mobile site offers the game. Our page on whether free spins work on the app covers the details.
Gambling can be addictive. Free, confidential help is available 24 hours a day from the National Gambling Helpline on 0808 8020 133. Visit GamCare.org.uk and GamCare, or block yourself from all UK-licensed gambling sites with GAMSTOP.
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