Quickspin

Skulls Up

Slots Video Slots Action & Adventure Horror Animals Sea Love Pirate

Pirate feature slot where Wild Respins expand the reel set

SlotRanker Score

/ 99

05099

The SlotRanker Score is calculated from the visible data below. It is not affected by affiliate deals, and it cannot be bought.

How this score is built

RTP

96.26%

return to player

Volatility

High volatility

variance

Max win

3,650×

top multiplier

Min bet

$0.20

per spin

Reels

243 lines

Player rating

4.2 ★

15 votes

DEMO Play free, no signup

Quickspin

Embed on your site

4.2 / 5

15 ratings

User ratings are shown separately from the Slot Score unless stated otherwise.

Five weighted signals shape the composite. Four context signals refine ties. See how we rate for the full methodology.

Payouts & RTP9/10

RTP 96.26% → 9.0/10

Volatility9/10

high → 9.0/10

Win Potential7.1/10

x3650.00 (3650×) → 7.1/10

Features8.5/10

13 features → 8.5/10

Game Mechanics6.8/10

f=13 r=5 p=243 → 6.8/10

Context signals (tie-breakers)

Layout6/10

5x3 → 6.0/10

Bet Flexibility6/10

0.2–100 (×500) → 6.0/10

Provider Reputation7.3/10

provider avg 7.3 → 7.3/10

Popularity6.4/10

search demand p70 + proxy blend (70/30) → 6.4/10

Popularity blends real player search demand (~30 markets) with a catalogue-derived proxy; games without measurable search demand use the proxy alone. Not live play telemetry.

Cite this score

SlotRanker Score: 78 — Skulls Up by Quickspin

https://slotranker.com/quickspin/skulls-up#score

How to cite

Slot Summary

Released on December 16, 2019, Skulls Up uses its Pirate setting to stage a feature sequence that physically expands the reels. Quickspin begins with 243 Ways, then Flaming Skull Wilds can trigger Respins that open additional positions above the reels and raise the count to 1,944 Ways. The same expanding system carries into six Free Spins, where reel growth is retained and fully expanded reels award two Additional Free Spins. High volatility and an x3650 maximum win put the pressure on reaching those larger configurations.

How It Plays

The base format uses five reels and 243 Ways, with wins read across adjacent reels. A Flaming Skull Wild interrupts that shape by starting a Respin sequence.

During Respins, skull Wild symbols can break open positions above the reel where they land. More open positions increase the number of Ways available for later evaluations.

Theme & Atmosphere

Pirate and Sea themes frame the search around a tropical island rather than a ship battle. Treasure hunting supplies the objective, while Horror enters through the flaming skull imagery.

Animals such as parrots and monkeys keep the Pirate setting mischievous, softening the darker skull motif without disconnecting it from the island expedition.

Action & Adventure Horror Animals Sea Love Pirate

Features & Win Potential

Respins and Reelset Changing operate as one linked system. Wild Symbol landings can open higher reel positions, and the expanded configuration increases the number of active Ways.

A Flaming Skull Wild remains active until it contributes to a win, when it changes into a regular Wild Symbol. New qualifying Wilds can prolong the Respins.

High volatility Free Spins Scatter Symbol Wild Symbol Respins 5 Reels Turbo Spin Sub Symbols In Feature 243 Ways RTP range 96% RTP Bonus symbols Reelset Changing

Bonus & Free Spins

Three Bonus symbols award six Free Spins. Reel expansions created by Respins remain open after the Respin ends, allowing the round to retain its larger configuration.

Every reel expanded to six symbols awards two Additional Free Spins. The bonus continues until the remaining spin count reaches zero, including all earned extensions.

Spec sheet

Skulls Up at a glance.

Identity

Slot nameSkulls Up

StudioQuickspin

Released12/16/2019

Math

SlotRanker Score78

RTP96.26%

VolatilityHigh volatility

Max win3,650×

Bet range$0.20 – $100.00

Player rating4.2 / 5 · 15 votes

Format

Reels5

Paylines243

Layout5x3

Features

Themes

Expected average based on this slot's 96.26% RTP — individual sessions vary with volatility.

Bet per spin

Spins per hour400

Session length (hours)

Cost per hour$2.99

Cost per session$2.99

Estimate only, for entertainment purposes — treat gambling as entertainment, not a way to make money, and set a budget you can afford to lose.

How long could a bankroll last on Skulls Up? We simulate thousands of sessions from this game's published RTP and volatility — the long-run math, not a prediction of your next spin.

Bankroll ($)Bet per spin ($)Speed

Volatility tier: High

Running simulation…

How this works

Each simulated spin either misses or returns a win drawn from a log-normal distribution, with the hit rate and spread set by the slot's volatility tier (High). The model is calibrated so the average return equals this slot's published RTP (96.26%), with wins capped at its top multiplier (3,650×).

This is a simplified, parametric model of the game's math — not its real paytable. It exists to make the house edge visible over many sessions, so the numbers above are averages across thousands of runs, never a forecast of one.

This is math, not a prediction. Real sessions vary wildly, and no strategy changes a game's built-in house edge. Play for fun, set limits, and never bet more than you can afford to lose.

Where to play Skulls Up

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Compare Skulls Up with other games

	Skulls Up Score 78This game	Broadsiders Score 86	Kraken's Cove Score 79	Wild Bounty Score 78	Pirate Fortune Score 77
Identity
Studio	Quickspin	Massive Studios	Relax Gaming	Hurricane Games	Popok Gaming
Released	12/16/2019	1/27/2025	1/8/2025	8/19/2021	8/14/2024
Math
RTP	96.26%	96.62%	96.1%	96.1%	96.26%
Volatility	High volatility	—	—	High volatility	High volatility
Max win	3,650×	30,000×	10,000×	2,500×	5,000×
Format
Reels	5	7	6	5	5
Layout	5x3	4-5-6-7-6-5-4	6x6	5x3	5x3
Paylines	243	Cluster Pays	Cluster Pays	20	20
Min bet	0.2	0.1	0.1	0.1	0.1
Max bet	100	100	10	100	500
Features
Progressive	—	—	—	—	✓
Wild symbol	✓	✓	✓	✓	✓
Free spins	✓	✓	✓	✓	✓
Scatter symbol	✓	✓	✓	✓	✓
Multiplier	—	✓	—	—	✓
Bonus game	—	—	—	✓	✓
Respins	✓	—	—	✓	—

Every number is shown as a delta against Skulls Up.

Comparing against

Skulls Up

Quickspin

RTP

96.26%

Max win

3,650×

Score

+ Multiplier− Respins

+ Progressive+ Multiplier+ Bonus Game− Respins

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01How do the reels expand in Skulls Up?

A Flaming Skull Wild triggers Respins. New Flaming Skull Wilds and regular Skull Wilds open positions above their reels, increasing the available Ways as the sequence continues.

02How many Ways can Skulls Up reach?

The base layout begins with 243 Ways. Expanding every reel to six symbols raises the maximum active count to 1,944 Ways during the relevant feature sequence.

03How are Free Spins triggered?

Three Treasure Chest Bonus symbols trigger six Free Spins. The expanded reel height remains in place after each Respin during the feature.

04Can the Free Spins round be extended?

Yes. Each reel that reaches six symbols in height awards two Additional Free Spins, so expanding several reels can lengthen the bonus round.

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