Pragmatic Play

Thunder vs Underworld 250

Opposing mythological settings with different bonus-frequency profiles

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

98.01%

return to player

Volatility

Medium volatility

variance

Max win

25,000×

top multiplier

Min bet

$0.10

per spin

Reels

15 lines

Player rating

4.6 ★

15 votes

DEMO Play free, no signup

Pragmatic Play

Embed on your site

4.6 / 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 & RTP10/10

RTP 98.01% → 10.0/10

Volatility8/10

medium → 8.0/10

Win Potential8.8/10

x25000.00 (25000×) → 8.8/10

Features5.5/10

8 features → 5.5/10

Game Mechanics4.4/10

f=8 r=5 p=15 → 4.4/10

Context signals (tie-breakers)

Layout5/10

5x5 → 5.0/10

Bet Flexibility6/10

0.1–100 (×1000) → 6.0/10

Provider Reputation7.2/10

provider avg 7.2 → 7.2/10

Popularity5/10

synthetic proxy → 5.0/10

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: 71 — Thunder vs Underworld 250 by Pragmatic Play

https://slotranker.com/pragmatic-play/thunder-vs-underworld-250#score

How to cite

Slot Summary

The square reel field in Thunder vs Underworld 250 hosts a mythology slot with two selectable sides. Pragmatic Play makes that choice affect more than the scenery: Thunder offers a higher free-spins trigger chance but a lower average bonus reward than Underworld. Expanding multiplier wilds give both modes their shared identity.

How It Plays

Winning combinations begin on the leftmost reel and continue across adjacent reels. Ordinary wilds can appear throughout the field, helping complete matches within the fixed payline arrangement.

An expanding wild stretches vertically across its reel when doing so produces a win. It then receives a random multiplier, changing the value of the resulting payout.

Bonus & Free Spins

Three scatters on reels 1, 3 and 5 award 10 free spins. During the feature, landing an expanding wild makes it expand and receive a random multiplier.

Spec sheet

Thunder vs Underworld 250 at a glance.

Identity

Slot nameThunder vs Underworld 250

StudioPragmatic Play

Released9/9/2026

Math

SlotRanker Score71

RTP98.01%

VolatilityMedium volatility

Max win25,000×

Bet range$0.10 – $100.00

Player rating4.6 / 5 · 15 votes

Format

Reels5

Paylines15

Layout5x5

Features

Themes

Expected average based on this slot's 98.01% RTP — individual sessions vary with volatility.

Bet per spin

Spins per hour400

Session length (hours)

Cost per hour$0.80

Cost per session$0.80

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 Thunder vs Underworld 250? 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: Medium

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 (Medium). The model is calibrated so the average return equals this slot's published RTP (98.01%), with wins capped at its top multiplier (25,000×).

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 Thunder vs Underworld 250

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Compare Thunder vs Underworld 250 with other games

	Thunder vs Underworld 250 Score 71This game	Serpentina Score 91	Pond of Plinko Score 91	Viking Runes Score 89	JunglePop Score 88
Identity
Studio	Pragmatic Play	Massive Studios	Print Studios	TrueLab Games	AvatarUX
Released	9/9/2026	3/20/2025	12/10/2024	3/8/2021	1/30/2025
Math
RTP	98.01%	96.53%	96.1%	96.2%	96.08%
Volatility	Medium volatility	High volatility	High volatility	High volatility	High volatility
Max win	25,000×	30,000×	30,000×	25,000×	50,000×
Format
Reels	5	7	5	9	5
Layout	5x5	7x7	5x3	9x9	5x3
Paylines	15	—	20	8	486 (Bothway)
Min bet	0.1	0.1	0.1	0.4	0.1
Max bet	100	100	30	40	40
Features
Progressive	—	—	—	—	—
Wild symbol	✓	✓	—	✓	—
Free spins	✓	✓	—	✓	✓
Scatter symbol	✓	✓	✓	✓	✓
Multiplier	—	✓	✓	—	✓
Bonus game	—	—	✓	—	—
Respins	—	—	—	—	—

Every number is shown as a delta against Thunder vs Underworld 250.

Comparing against

Thunder vs Underworld 250

Pragmatic Play

RTP

98.01%

Max win

25,000×

Score

+ Multiplier+ Bonus Game− Wild− Free Spins

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