Slotmill Lets a Forgetful Skeleton Loose in Ribs’ Golden Crypt
Slotmill has gone underground for its latest Halloween release, sending players into the crypt of a skeleton who has, rather inconveniently for himself, mislaid the keys to his own treasure hoard. Ribs’ Golden Crypt pairs a cartoonish, spooky-cute setting with a very high-volatility cluster engine and a 10,000x ceiling, landing just in time for the run-up to 31 October.
What’s been released
Slotmill has launched Ribs’ Golden Crypt, a quirky, spooky game timed for Halloween, with a generous RTP of 96.01% and a maximum win of 10,000x.
The game sits on a 6×6 grid rather than fixed paylines, and
is built as a Cluster Pay Avalanche slot packed with Giant Symbols, Multiplier Meteors up to x100, and Free Spins with carrying multipliers, up to 10,000x the bet.
The theme leans into a light-hearted take on the graveyard trope.
The action takes place inside the treasure-filled crypt of Ribs, a cartoon skeleton who has somehow managed to lose the keys to his own home, with a light-hearted Halloween setting rather than a particularly sinister one.
Along the way,
players join Ribs on the search for his keys as other denizens of the graveyard appear across the reels, including man-eating slimes, mischievous ghosts, cheeky bats, and smug haunted carved pumpkins.
How it plays
Wins come from clusters of at least 5 matching symbols on the 6×6 grid, with winning clusters triggering Avalanches that remove their symbols and allow replacements to fall into the empty spaces.
Each payout also leaves something behind to keep the sequence going:
every spin that produces a cluster win also places a Wild into one random empty position, potentially helping the Avalanche sequence continue.
The multiplier side of the game runs on two systems working together.
Giant Symbols introduce the first multiplier mechanic, appearing with values from x2 to x10, and when one contributes to a win its value is added to the current win multiplier.
Layered on top of that,
Multiplier Meteors offer values of x2, x3, x5, x7, x10, x20, or x100
when they land during play.
Free Spins are triggered through scatters, and the round behaves differently to the base game.
The bonus round is triggered by landing 3, 4, or 5 Bonus Key scatter symbols, awarding 8, 10, or 12 free spins respectively, and the accumulated win multiplier does not reset between spins, allowing it to build progressively throughout the feature, with Super Mode Free Spins offering elevated multiplier action.
For players who would rather skip the build-up,
Slotmill’s signature Fast Track bonus buy options let players directly purchase specific bonus rounds, while Burst Mode functions as an ultra-fast auto-spin engine that plays two rounds per second while still running all underlying mechanics.
Where it fits
Ribs’ Golden Crypt continues a run of large-grid cluster titles from the studio.
Slotmill has become increasingly comfortable with large-grid cluster slots, and this title stays firmly within that territory.
Betting is flexible enough for casual and high-stake players alike, with
stakes ranging from €0.20 to €100, the standard RTP set at 96.01%, and a lower 94% configuration also available
for operators to select from.
It joins a crowded run of seasonal slot launches this October, but the persistent free-spin multiplier and dual-layer meteor system give it a distinct mechanical identity rather than leaning solely on its Halloween dressing. For UK players browsing Slotmill’s catalogue through licensed operators, it offers a high-ceiling alternative to the studio’s existing cluster-pay titles, with the key hook being how much of that 10,000x cap is driven by multipliers that stick around rather than reset.
