Dungeon Raid Slot Demo by Grind Gaming

Dungeon Raid by Grind Gaming Slot Overview

Dungeon Raid by Grind Gaming brings a cartoon dungeon to life with blue stone walls, skull decorations and colourful monsters. Its Wild multipliers connect it with Olympus Doubles, but here full-reel Wilds collect Sphere values individually, adding a mechanical twist to the comic fantasy setting.

While a Wild is on the board, each Sphere boosts every active Wild before disappearing and having its position refilled from above. During Raid Bonus, Wilds stick and retain their individual multipliers across free spins. High volatility accompanies a 25,000x maximum win. Explore these mechanics in the free demo on BonusTiime, with no account or deposit needed.

Dungeon Raid Slot Specifications

Dungeon Raid uses a 5×4 grid with 14 fixed paylines. The house edge sits at 4.00%.

RTP (Return to Player)

96.00% RTP gives Dungeon Raid a solid long-term return. The house edge sits at 4.00%.

Volatility

High volatility means stronger swings and less predictable pacing, so bet sizing needs care.

Max Win

25,000x the bet caps the game, so a €1 spin reaches €25,000 at maximum.

Dungeon Raid Slot Features

Dungeon Raid mixes Wild multipliers, Sphere values, Scatter triggers and the Raid Bonus into a feature set that keeps the action moving through sticky free spins, paid spin modes and direct bonus buys.

Wild

Wilds substitute for any Low or High symbol to complete a winning line, but they never replace Scatter or Sphere. Each Wild covers its full reel and starts with no multiplier: every Sphere that resolves while it is on the board adds that Sphere’s value to its own multiplier. A winning line is multiplied by the sum of the multipliers of the Wilds it crosses.

Sphere

Sphere never creates a win on its own. It carries x2 to x100, and when a Wild is active it adds that value to every Wild on the board before disappearing. The emptied cell refills from above, and any new Sphere repeats the process. With no Wild on the board, a Sphere stays where it landed and pays nothing.

Scatter

Scatter pays no direct win and can land anywhere on the grid, with at most one per reel. It cannot land on a reel taken by a Wild. Three Scatters trigger Raid Bonus with 8 Free Spins, four Scatters trigger Raid Bonus with 10 Free Spins, and five Scatters trigger Super Raid Bonus with 12 Free Spins.

Base Mode

Base Mode runs at x1 bet and uses the standard spin. Any reel can turn Wild, so a round can build value quickly when Spheres land alongside them. This mode forms the core of the online slot gameplay and leads into the paid options.

Ante

Ante costs x2.5 the bet per spin and increases the chance of Scatter symbols landing. It is switched on from the feature menu for your next spins, raising the probability of triggering Raid Bonus or Super Raid Bonus during regular play.

Special Spin

Special Spin costs x200 the bet per spin, stays on for your next spins and guarantees at least one full-reel Wild and at least one Sphere worth x2 or more. Further Wilds and Spheres can still land, but Scatter does not appear, so this mode cannot trigger a bonus round.

Max Spin

Max Spin costs x700 the bet per spin, stays on for your next spins and guarantees 2 full-size Wilds plus one Sphere worth x2 or more. Scatter does not appear, so it cannot trigger the bonus game. This mode pushes the board towards stronger Wild multiplier combinations from the start.

Raid Bonus

Raid Bonus starts when 3 or 4 Scatters land in Base Mode or Ante. Three Scatters award 8 Free Spins and four Scatters award 10 Free Spins, and every Wild sticks to its reel for the rest of the round. Each sticky Wild keeps its own multiplier across spins, so earlier hits can grow differently from later ones.

Super Raid Bonus

Super Raid Bonus triggers with 5 Scatters and awards 12 Free Spins. It uses the same sticky Wild system as Raid Bonus, but the first free spin also guarantees a Wild and a Sphere worth x2 or more. That gives the round an immediate boost.

Retrigger

Retrigger works in both bonus rounds. Every Scatter that lands during a free spin adds +1 Free Spin, so 1 to 5 Scatters extend the round by 1 to 5 spins. This keeps the sticky Wilds active for longer and can stretch strong runs further.

Bonus Buy

The feature menu holds five paid options: Ante, Special Spin and Max Spin are switched on and charged on every spin that follows, while Raid Bonus and Super Raid Bonus are bought once for a direct entry.

• Ante: x2.5 the bet per spin; increases the chance of Scatter symbols landing, raising the odds of triggering Raid Bonus or Super Raid Bonus.
• Special Spin: x200 the bet per spin; guarantees at least one full-reel Wild and one Sphere worth x2 or more, and Scatter does not appear.
• Max Spin: x700 the bet per spin; guarantees 2 full-size Wilds and one Sphere worth x2 or more, and Scatter does not appear.
• Raid Bonus: x250 the bet; buys 8 or 10 Free Spins.
• Super Raid Bonus: x500 the bet; buys 12 Free Spins.

Dungeon Raid Slot Review

Dungeon Raid wraps its cartoon dungeon theme around chunky fantasy art, stone panels and bright monster symbols, so the identity lands fast. The Wild and Sphere icons do more than decorate the grid, because they carry the board’s main multiplier logic and make the interface feel built around a single idea.

The gameplay stands out because Sphere values can feed every active Wild, then disappear and have their positions refilled, allowing further Spheres to repeat the process within the 5×4 layout. High volatility and a 25,000x ceiling create scope, but the paid modes sit at x200 and x700, so the buy side is expensive.

Dungeon Raid works best as a feature driven slot, especially when sticky Wilds carry multipliers through Raid Bonus and Super Raid Bonus. During the bonus rounds, Wilds remain on their reels and retain their individual multipliers, allowing later Spheres to build on values collected earlier in the round.

Dungeon Raid Slot FAQ