Games Global

Thunderstruck

Slots Video Slots Action & Adventure Mythology Ancient Viking Thunderstorm

Original Norse series entry with a compact bonus structure

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

96.1%

return to player

Volatility

Medium volatility

variance

Max win

—

top multiplier

Min bet

$0.90

per spin

Reels

9 lines

Player rating

3.7 ★

2 votes

DEMO Play free, no signup

Games Global

Embed on your site

3.7 / 5

2 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 96.1% → 9.0/10

Volatility8/10

medium → 8.0/10

Win Potential—

no data

Features4.5/10

6 features → 4.5/10

Game Mechanics4.2/10

f=6 r=5 p=9 → 4.2/10

Context signals (tie-breakers)

Layout6/10

5x3 → 6.0/10

Bet Flexibility4/10

0.9–45 (×50) → 4.0/10

Provider Reputation6.7/10

provider avg 6.7 → 6.7/10

Popularity7.9/10

search demand p98 + proxy blend (70/30) → 7.9/10

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: 68 — Thunderstruck by Games Global

https://slotranker.com/games-global/thunderstruck#score

How to cite

Slot Summary

Before Thunderstruck II extended the series, Thunderstruck set out its Norse formula in 2004: a compact 5x3 game with 9 paylines, Thor as a multiplying Wild, and a retriggerable free-spins round. The Games Global title depends on a small number of legible rules rather than stacked bonus systems, which gives the original a markedly simpler identity than its later relatives.

How It Plays

Thunderstruck uses 5 reels, 3 rows, and 9 paylines, making each result easy to scan. Wins follow fixed lines rather than multiway or cluster rules.

Thor is the decisive special symbol in regular play. When he completes a paying combination as the Wild, the resulting payout is doubled.

Theme & Atmosphere

The Viking and Ancient themes focus on Thor, ram Scatters, and a storm-driven Norse setting. Mythology supplies functional characters rather than background decoration alone.

Thunderstorm imagery matches the game's direct presentation: lightning and Thor signal the important events, keeping the Action and Adventure treatment readable on a compact grid.

Action & Adventure Mythology Ancient Viking Thunderstorm

Features & Win Potential

Medium volatility places Thunderstruck between low-variance line play and harsher bonus-led designs. Its 96.1% listed RTP accompanies a relatively small feature set.

Scatter symbols provide both direct awards and access to Free Spins, leaving the multiplying Wild as the main modifier during ordinary spins.

Free Spins Scatter Symbol Medium volatility 5 Reels RTP range 96% RTP

Bonus & Free Spins

Landing 3 ram Scatter symbols activates 15 Free Spins. The same trigger can occur during the feature, allowing another set of spins to be added.

The round retains the game's regular line structure, so its extra opportunity comes from repeated spins and possible retriggers rather than a replacement grid.

Spec sheet

Thunderstruck at a glance.

Identity

Slot nameThunderstruck

StudioGames Global

Released5/1/2004

Math

SlotRanker Score68

RTP96.1%

VolatilityMedium volatility

Max win—

Bet range$0.90 – $45.00

Player rating3.7 / 5 · 2 votes

Format

Reels5

Paylines9

Layout5x3

Features

Themes

This game is searched most in United States, Brazil, and United Kingdom.

Expected average based on this slot's 96.1% RTP — individual sessions vary with volatility.

Bet per spin

Spins per hour400

Session length (hours)

Cost per hour$14.04

Cost per session$14.04

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 Thunderstruck? 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 (96.10%), with wins capped at its top multiplier (1,000×).

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 Thunderstruck

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Casino availability depends on where you play from. We only show casinos that accept players from your country.

Compare Thunderstruck with other games

	Thunderstruck Score 68This game	Divine Fortune Score 80	Fire Lightning Score 76	Lightning Strike Megaways Score 74	Thors Lightning Score 74
Identity
Studio	Games Global	NetEnt	BGaming	Blueprint Gaming	Red Tiger Gaming
Released	5/1/2004	1/25/2017	7/16/2018	2/14/2019	2/14/2019
Math
RTP	96.1%	96.59%	97.61%	96.5%	95.1%
Volatility	Medium volatility	Medium volatility	Medium/High	Medium volatility	High volatility
Max win	—	—	1,000×	—	1,848×
Format
Reels	5	5	5	6	5
Layout	5x3	5x3	5x3	6x5	5x4
Paylines	9	20	20	15625	7
Min bet	0.9	0.2	0.01	0.1	0.2
Max bet	45	200	20	50	40
Features
Progressive	—	✓	—	—	—
Wild symbol	—	✓	✓	✓	✓
Free spins	✓	✓	✓	✓	✓
Scatter symbol	✓	—	✓	✓	✓
Multiplier	—	—	—	✓	—
Bonus game	—	✓	—	✓	—
Respins	—	✓	—	✓	—

Every number is shown as a delta against Thunderstruck.

Comparing against

Thunderstruck

Games Global

RTP

96.1%

Max win

—

Score

+ Progressive+ Wild+ Bonus Game+ Respins− Scatter

Lightning Strike Megaways

+ Wild+ Multiplier+ Bonus Game+ Respins

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01When was Thunderstruck released?

Thunderstruck was released in May 2004 and precedes Thunderstruck II in the named series.

02How many paylines does Thunderstruck use?

The game uses 9 paylines across a 5x3 reel layout.

03What does the Thor symbol do?

Thor acts as a Wild multiplier and doubles the payout of a combination he completes.

04How are free spins triggered in Thunderstruck?

Landing 3 ram Scatter symbols activates 15 free spins, and the feature can be triggered again during the round.

Series

Thunderstruck

View all 3 games

Game	Year	RTP	Volatility	Slot Score
ThunderstruckCurrentGames Global	2004	96.1%	Medium volatility	68
Thunderstruck IIGames Global	2010	96.65%	Medium volatility	76
Thunderstruck II Mega MoolahLatestGames Global	2022	92.01%	High volatility	58

ThunderstruckCurrent
Games Global · 2004
RTP96.1%Score68Medium volatility
Thunderstruck II
Games Global · 2010
RTP96.65%Score76Medium volatility
Thunderstruck II Mega MoolahLatest
Games Global · 2022
RTP92.01%Score58High volatility