Dwarf Mine is a Yggdrasil video slot released on 21 March 2019. Dwarf Mine starts with 1,024 ways to win and uses Bonus drills to expand its underground machine from a 5x4 layout to a 5x7 layout with 16,807 ways. Dwarf Mine also separates its bonus play into a 10-spin Free Spins Mode and a five-spin Collection Free Spins round.
Dwarf Mine places five reels inside a mechanical digging rig operated by a red-bearded miner. Dwarf Mine pays matching regular symbols on three or more consecutive reels from the left, while the number of visible symbol positions changes when Bonus drills appear. Dwarf Mine increases the available ways from 1,024 to as many as 16,807 as rows are added.
Dwarf Mine connects its expanding layout to a persistent crystal-collection system. Dwarf Mine allows coloured crystals to appear only in the extra rows created during base-game expansions, so the two main mechanics interact without being the same feature. Dwarf Mine remains random on every spin, and a larger reel area does not guarantee that a paying combination will form.
Dwarf Mine is listed by Wildz with an RTP of 96.80%, volatility of 5/10 and demo play enabled. Dwarf Mine can exist in other mathematical configurations, so the information panel inside the loaded version remains the relevant place to confirm its current rules. Dwarf Mine has no progressive jackpot according to the platform record.
Dwarf Mine creates a ways win when matching symbols land on consecutive reels beginning with the first reel. Dwarf Mine requires at least three reels for regular symbols, while multiple copies of the same paying symbol on one reel can contribute more than once to the evaluated combination. Dwarf Mine settles each spin under the paytable displayed in the game information panel.
Dwarf Mine can add one, two or three rows when Bonus drills land on the eligible reels. Dwarf Mine uses those temporary extra rows to increase the number of possible symbol paths and to introduce collectible crystals. Dwarf Mine does not let the player select where a drill or crystal lands, and changing the stake cannot force an expansion.
Dwarf Mine places Bonus drill symbols only on reels 1, 3 and 5 during the base game. Dwarf Mine expands the machine downward by one row for each drill in the spin, moving from 5x4 through 5x5 and 5x6 to a maximum 5x7 layout. Dwarf Mine reaches 16,807 ways to win when all three extra rows are open.
Dwarf Mine applies the expansion to the current spin rather than allowing the larger layout to be chosen manually. Dwarf Mine may place collectible crystals in the added rows, giving an expansion a second function beyond increasing the ways count. Dwarf Mine cannot guarantee a win merely because more rows or more possible paths are active.
Dwarf Mine uses green, yellow, blue and red crystals as collectible symbols in the expanded base-game rows. Dwarf Mine records each colour separately and completes a collection when 5 crystals of the same colour have been gathered. Dwarf Mine then awards the Collection Free Spins feature associated with that colour.
Dwarf Mine carries the collection forward between eligible base-game spins according to the counter shown beside the reels. Dwarf Mine adds a matching Super High Paying symbol during the resulting collection round, linking the stored crystal colour to the bonus reel set. Dwarf Mine does not permit the player to choose which colour appears next or how quickly a collection is completed.
Dwarf Mine offers two distinct free-spins routes. Dwarf Mine awards 10 free spins on the fully expanded 5x7 layout when three Bonus drills land in one base-game spin. Dwarf Mine removes the Bonus drills and collectible crystals from this standard Free Spins Mode.
Dwarf Mine awards 5 Collection Free Spins after five crystals of one colour have been collected. Dwarf Mine plays this second round on the 5x7 layout and adds a Super High Paying symbol matching the completed crystal collection. Dwarf Mine cannot guarantee either trigger within a particular number of paid spins, and free spins do not ensure a profit.
Dwarf Mine has an RTP of 96.80% on the MGA build served by Wildz for this page. Dwarf Mine RTP is a theoretical long-term percentage calculated across a very large number of rounds rather than a target for one session. Dwarf Mine can return above or below that figure during any shorter period.
Dwarf Mine may be distributed in other configurations outside the version described here. Dwarf Mine players should open the information panel before wagering and confirm the RTP shown for the active build. Dwarf Mine RTP does not indicate when expanding reels, crystals or free spins will occur.
Dwarf Mine is rated 5/10 on the Wildz platform scale, placing it in the medium-volatility range. Dwarf Mine can still produce stretches of non-winning spins and irregular feature timing even though its rating sits in the middle band. Dwarf Mine bankroll limits should therefore be based on affordable expenditure rather than an expected short-term return.
Dwarf Mine volatility describes how results are distributed over time. Dwarf Mine does not become due to award a drill, complete a crystal set or enter Free Spins Mode after an unsuccessful sequence. Dwarf Mine evaluates every eligible spin independently under its programmed rules.
Dwarf Mine has a developer-listed maximum win of €488,000. Dwarf Mine reaches its highest stated result only through the mathematical possibilities built into the paytable and feature system. Dwarf Mine does not include a progressive jackpot, so the listed ceiling is not a growing network prize.
Dwarf Mine maximum win is an upper limit rather than a typical outcome. Dwarf Mine players cannot reproduce it by changing spin timing, using autoplay or following a betting pattern. Dwarf Mine stake choices alter the amount risked but do not make the top result more likely to occur.
Dwarf Mine play begins by opening the paytable, checking the active RTP and choosing a permitted stake. Dwarf Mine starts one paid game cycle when the spin control is used, after which the reels evaluate ways wins, drill expansions and any feature trigger. Dwarf Mine players should understand both free-spins routes before wagering real money.
Dwarf Mine is subject to Great Britain’s statutory online slot limits when supplied by a Gambling Commission licensee. Dwarf Mine customers aged 18–24 may stake no more than £2 per game cycle, while customers aged 25 and over have a £5 maximum. Dwarf Mine stake limits restrict spending per cycle but do not alter the random probability of winning.
Yes, Dwarf Mine is available in desktop and mobile formats. Dwarf Mine adapts its expanding 5x4-to-5x7 reel area and collection counters to compatible phone and tablet screens. Dwarf Mine uses the same principal drill, crystal and free-spins rules on supported mobile devices.
Dwarf Mine mobile performance can depend on the browser, connection and device in use. Dwarf Mine should be opened over a secure connection, with the information panel checked before a real-money spin. Dwarf Mine does not change its random outcome probabilities because it is played on a smaller screen.
Yes, Dwarf Mine has demo play enabled at Wildz. Dwarf Mine demo mode uses virtual credits to demonstrate the expanding reels, crystal counters and both free-spins formats without awarding withdrawable cash. Dwarf Mine demo results do not predict later real-money outcomes.
Dwarf Mine free-play access through a Gambling Commission-licensed operator requires age verification before the game can be used. Dwarf Mine demo mode can help a player inspect the controls and paytable, but it cannot reveal a profitable pattern. Dwarf Mine remains random in both demo and real-money modes.
Dwarf Mine may be supplied in Great Britain by an online casino holding the appropriate Gambling Commission permission and carrying the Yggdrasil game. Dwarf Mine players must be at least 18 years old, complete age and identity checks and remain within the applicable online slot stake limit. Dwarf Mine availability at a particular licensed operator depends on that operator’s current catalogue.
Dwarf Mine is listed internationally by Wildz, but Wildz states that visitors from the United Kingdom are redirected to partner casinos. Dwarf Mine players should use the Gambling Commission public register to check the business that ultimately supplies the game before depositing. Dwarf Mine access should not be assumed solely from its presence in the international Wildz catalogue.
Dwarf Mine real-money play in Great Britain is regulated by the Gambling Commission. Dwarf Mine operators serving England, Scotland and Wales must hold the appropriate permission, and online customers must be 18 or older. Dwarf Mine customers must complete age and identity verification before gambling, with age checks also required for free-play gambling games.
Dwarf Mine players should distinguish Great Britain from the whole United Kingdom when applying these rules. Dwarf Mine play in Northern Ireland falls under a separate legal framework rather than the Gambling Act 2005 system used in England, Scotland and Wales. Dwarf Mine players can consult the Commission’s public register to check a British gambling business.
| Area | United Kingdom Rule |
|---|---|
| Minimum online gambling age | 18+ |
| Main regulator | Gambling Commission |
| Online casino licensing | Operators serving Great Britain must hold the appropriate Gambling Commission permission |
| Age and identity checks | Verification must be completed before gambling |
| Maximum online slot stake, ages 18–24 | £2 per game cycle, in force since 21 May 2025 |
| Maximum online slot stake, ages 25+ | £5 per game cycle, in force since 9 April 2025 |
| Free demo access at licensed operators | Age verification is required before access to free-to-play gambling games |
| Wildz status for UK visitors | Wildz states that UK visitors are redirected to partner casinos |
Dwarf Mine was developed and released in 2019 by Yggdrasil.
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Min/Max Bet:
€
0.10 –
50.00
Volatility:
Medium
(5/10)
Platform:
Desktop & Mobile
Developer:
Yggdrasil
Game Type:
Slots