Mole Digger

Developed by Play'n GO, the game attempts to differentiate itself by replacing the typical rugged miner with cartoonish moles who take centre stage in this underground digging adventure. Their quirky appearance and yellow gloves offer a playful twist on a familiar mining theme, though the rest of the aesthetic stays close to what players expect from the genre.

The visuals present a cavern filled with mining equipment, glowing gems, and makeshift tracks, accompanied by jaunty music that keeps the tone light. Three feature pots positioned above the reels advertise the slot’s main structure: a hold and win bonus that can come with up to three modifiers depending on which pots are filled. Alongside these, four fixed cash pots sit to the side, giving players a clear goal during the bonus.

Despite the charming mole characters, Mole Digger’s personality feels somewhat muted outside of its cute animation work. The mining theme remains conventional, and much of the gameplay leans on standard mechanics that will feel familiar to fans of the hold and win format.

Mole Digger is played on a 5x4 grid with 25 paylines that pay left to right. Stakes range from 0.10 to 100 per spin. As is typical with Play'n GO titles, there is no bonus buy option, and the game is built with medium-high volatility. The optimal RTP sits at 96.2%, though lower variants may appear at certain casinos.

The paytable includes low-paying J–A royal symbols, awarding up to 3x the bet for a five-symbol match. Higher-paying items include ropes, hammers, spades, and picks, reaching 8x for top combinations. The mole wild substitutes for all symbols except the various gem symbols used for features and the hold and win round.

Mine Cart Feature

During any base game spin, mine carts may appear beneath one or more reels. When they do, every cash value on the reel above is collected instantly. This feature adds occasional bursts of excitement and ensures that some gem values are not wasted between bonus rounds.

Hold and Win Bonus

The main feature triggers when 6 or more gem symbols land. This awards the hold and win round, which begins with 3 respins. Each gem symbol that lands resets the counter back to 3.

Before the round begins, the feature pots above the reels determine how many modifiers are active: Boost, Mystery, or Collect. These pots fill during the base game whenever their associated gem colours appear. Alternatively, landing a special gem instantly triggers the bonus with 1 to 3 modifiers active.

Once the round begins, the reel strips change to display only gem values. All landed gems remain locked in place until the round ends.

Gem Modifiers

• Green Gem: Boosts all cash values on the grid by 1x to 10x the bet
• Red Gem: Awards a single high-value gem worth 10x to 500x the bet
• Blue Gem: Collects all cash values on the grid
• Yellow Gem: Awards random values ranging from 1x to 500x the stake

These modifiers can combine to create dynamic bonus rounds, though luck remains the primary factor.

Cash Pots

The four fixed jackpot-style prizes are only available during the hold and win feature:

• Mini: 15x
• Minor: 25x
• Major: 50x
• Grand: 500x (awarded by completely filling all symbol positions)

The Grand jackpot is the main chase prize and aligns with the grid-fill mechanic often found in similar slots.