Major Miners

Major Miners takes players deep underground for a treasure-hunting adventure from Yggdrasil, built around a 5-reel grid with 243 ways to win, a jackpot-flavoured bonus round, and a wheel-spinning feature that gives the game its escalating win potential.

The setting is a mining cavern packed with rugged tools, glittering gemstones, and ore carts, all rendered with Yggdrasil's usual attention to animation detail: blast effects, spinning wheel reveals, and jackpot celebration sequences give the game a lively, adventurous feel throughout. Rugged miner characters and precious gem symbols make up the pay table, keeping the underground treasure-hunting theme consistent from the reels to the bonus round.

Structurally, Major Miners runs on a 5-reel, 3-row grid using 243 ways to win, meaning matching symbols connect across consecutive reels from left to right without needing exact payline positions. Landing 6 or more bonus symbols triggers the Big Blast Bonus, which upgrades collected symbols to higher prize tiers as it progresses, while landing 3 scatter symbols activates a separate Wheel Feature that carries its own jackpot potential. A Rockfall Modifier can add extra bonus symbols into the mix, giving the Big Blast Bonus more opportunities to trigger during a session.

On the numbers, the Major Miners RTP sits at 94%, a figure below many of Yggdrasil's other releases, so it's worth factoring that into expectations for the long-run return. Volatility is rated medium, and the max win is set at 5,000x the stake, giving a reasonable ceiling for a game built around jackpot-style prize tiers rather than pure cascading multipliers. Betting runs from £/€0.20 up to £/€40 per spin, and a Bonus Buy option is available on supported platforms for players who want to trigger the Big Blast Bonus instantly rather than working toward it naturally.

Major Miners combines a straightforward 243-ways structure with a genuinely different bonus mechanic in the upgrading Big Blast prize tiers, giving it a distinct identity within the mining-slot subgenre. It's worth a look for players who enjoy jackpot-chasing bonus rounds layered over familiar core gameplay.

The dual-trigger system, where both the Big Blast Bonus and the Wheel Feature can fire independently, gives Major Miners a bit more variety in how a session can unfold compared to slots that rely on a single scatter-triggered bonus round. Combined with the Rockfall Modifier's ability to seed extra bonus symbols, there's a reasonable amount going on beneath the surface of what initially looks like a fairly standard 243-ways cascading structure, and Yggdrasil's animation work helps sell the underground treasure-hunting fantasy throughout.

The demo is free to try at johnessyslots before deciding whether to mine for real-money wins, and it's a good way to see how frequently the Big Blast and Wheel features actually trigger during a typical session.