High volatility, 8,000x cap
Independent slot directories rate Thunderstruck II high volatility with a top win of 8,000x the stake.
What it means: Wildstorm and the later god modes carry the big wins, so a KSh budget should allow for flat stretches.
Slot review · Games Global
Thunderstruck II slot: RTP 96.65%, features and what it costs in KSh
Thunderstruck II is a Games Global (formerly Microgaming) Norse slot on 5×3 reels with 243 ways, known for the Great Hall of Spins that unlocks four god-themed free spins modes.
Below: what a session costs in shillings at its RTP, how the bonus round works and which casinos on our Kenya list carry Games Global slots.
Play Thunderstruck II
- RTP
- 96.65%
- Volatility
- Medium
- Reels · paylines
- 5 · 243
- Minimum bet
- 0.01
By
Amelia Nguyen
Updated 6 Oct 2026
Short answer
What does Thunderstruck II cost to play?
Thunderstruck II pays back 96.65% of stakes over the long run, a house edge of 3.35%. At KSh 20 a spin, 1,000 spins cost about KSh 670 on average, and KSh 1,000 lasts about 1,493 spins. The top prize is 8,000x the stake, according to Games Global. If a casino runs another RTP version, the game's help screen shows it, so check it before you play.
- RTP
- 96.65% Games Global
- 1,000 spins at KSh 20
- KSh 670 expected cost
- 1 hour at KSh 20
- KSh 402 600 spins
- Max win
- 8,000x times the stake
Thunderstruck II at a glance
| RTP | 96.65% |
|---|---|
| Volatility | Medium |
| Reels | 5 |
| Paylines | 243 |
| Minimum bet | 0.01 |
| Layout | 5×3 |
| Lines / ways | 243 ways |
| Max win | 8,000x |
| Released | May 2010 |
| Volatility (studio) | High |
| Themes | Adventure |
| Features | Scatter Symbols, Wild Symbols |
| Free demo | Not listed |
Bets are the studio's own limits in its base currency; each casino sets its own limits. Layout, max win, release date and studio volatility: SlotCatalog (independent slot directory), Thunderstruck II.
What Thunderstruck II costs per spin
Expected cost = bet × spins × (1 − RTP), at 96.65%.
| Bet per spin | 100 spins | 1,000 spins | 1 hour (600 spins) | vs median 96.01% |
|---|---|---|---|---|
| KSh 10 | KSh 33 | KSh 335 | KSh 201 | −KSh 64 |
| KSh 20 | KSh 67 | KSh 670 | KSh 402 | −KSh 128 |
| KSh 50 | KSh 167 | KSh 1,675 | KSh 1,005 | −KSh 320 |
| KSh 100 | KSh 335 | KSh 3,350 | KSh 2,010 | −KSh 640 |
Volatility
How volatile Thunderstruck II is
Volatility and max win: SlotCatalog (independent slot directory), Thunderstruck II.
Features
How Thunderstruck II pays
Great Hall of Spins
Thor's hammer scatters open the Great Hall. Triggering the bonus repeatedly unlocks Valkyrie, Loki, Odin and Thor free spins modes in turn.
Valkyrie free spins
The first mode awards free spins with all wins multiplied by 5x.
Thor's Rolling Reels
In Thor's mode, consecutive wins increase the multiplier as symbols roll in.
Wildstorm
At random in the base game, up to five reels turn fully wild.
Features: SlotCatalog (independent slot directory), Thunderstruck II.
Compare
Thunderstruck II against other Games Global slots
| Slot | Layout | Max win | Volatility (studio) |
|---|---|---|---|
| Thunderstruck II | 5×3 · 243 ways | 8,000x | High |
| Thunderstruck | 5×3 · 9 paylines | 3,333x | Medium |
| Isis | 5×3 · 25 paylines | 3,069x | – |
| Jungle Jim: El Dorado | 5×3 · 25 paylines | 3,680x | – |
Layout, max win and volatility: Games Global game sheets, as listed in each slot's sources on its page.
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Where to play Live ranking
Casinos with Games Global slots
Every casino here offers this studio's slots
-
1
AmunRa KSh 70,000 + 200 free spins
- M-Pesa
- –
- Airtel Money
- ✓
- Cards
- –
18+ · T&Cs Apply · Play Responsibly -
2
SapphireBet 150 free spins
- M-Pesa
- –
- Airtel Money
- –
- Cards
- ✓
18+ · T&Cs Apply · Play Responsibly -
3
MONRO KSh 120,000 + 400 free spins
- M-Pesa
- –
- Airtel Money
- –
- Cards
- –
18+ · T&Cs Apply · Play Responsibly -
4
Starzino KSh 200,000 + 150 free spins
- M-Pesa
- –
- Airtel Money
- –
- Cards
- –
18+ · T&Cs Apply · Play Responsibly -
5
5gringos KSh 70,000 + 200 free spins
- M-Pesa
- –
- Airtel Money
- –
- Cards
- ✓
18+ · T&Cs Apply · Play Responsibly -
6
Luckiest KSh 300,000 + 100 free spins
- M-Pesa
- –
- Airtel Money
- –
- Cards
- ✓
18+ · T&Cs Apply · Play Responsibly -
7
Allstarzcasino KSh 170,000 + 300 free spins
- M-Pesa
- –
- Airtel Money
- –
- Cards
- ✓
18+ · T&Cs Apply · Play Responsibly -
8
Rakebit 200 free spins
- M-Pesa
- –
- Airtel Money
- –
- Cards
- –
18+ · T&Cs Apply · Play Responsibly -
9
Casinia 200 free spins
- M-Pesa
- –
- Airtel Money
- –
- Cards
- ✓
18+ · T&Cs Apply · Play Responsibly -
10
Fugu Casino KSh 80,000 + 500 free spins
- M-Pesa
- –
- Airtel Money
- –
- Cards
- –
18+ · T&Cs Apply · Play Responsibly
Payment ticks come from each casino's live payment list; a dash means it is not listed, not that it is missing.
FAQ
What is the RTP of Thunderstruck II?
The version we list pays back 96.65%, a house edge of 3.35%. At KSh 20 a spin that is an expected cost of about KSh 670 per 1,000 spins. If a casino runs another version, the game's help screen shows it.
How does the Great Hall of Spins work?
Each time you trigger the bonus with Thor's hammer scatters you progress through the Great Hall, unlocking Valkyrie, Loki, Odin and Thor modes in order.
What is the max win on Thunderstruck II?
The maximum win is 8,000x the stake.
Can I play Thunderstruck II with M-Pesa?
The casino list on this page shows M-Pesa and Airtel Money from each casino's live payment list. Check the cashier before you deposit, and play only if you are 18 or older.
18+
Responsible gambling
Play slots only if you are 18+ and it stays fun
Set a budget before you spin, keep sessions short and never chase losses. Every cost on this page is an average: one session can end far above or below it.