Can I play Thunderstruck II for free?

Yes. The demo at the top of this page uses play money — no sign-up needed.

How does the game pay?

On 243 ways: matching symbols on neighbouring reels from the left, in any row.

What does the Wild do?

The Thunderstruck II logo substitutes for all symbols except the hammer and doubles wins it is part of.

What is the Great Hall of Spins?

Three or more hammers open it. Valkyrie is open from the start; Loki unlocks on the 5th visit, Odin on the 10th and Thor on the 15th.

A random base-game feature that turns up to five reels fully Wild.

What are the RTP and max win?

96.65% and 8,000× the bet; volatility is medium to high.

Free demo · by

Thunderstruck II

Asgard returns with 243 ways to win. The Thunderstruck logo is a Wild that doubles every win, Wildstorm can turn up to five reels Wild at random, and the Great Hall of Spins opens four free-spins rounds one by one — Valkyrie, Loki, Odin and finally Thor.

96.65%RTP

243Ways

4Free-spin halls

8,000×Max win

Play with Bonus Thunderstruck II · free demo, play money

Four rules of Asgard

Thunderstruck II is a 243-ways game with a bonus that grows the more you play it. Each scene is a playable 5×3 mini-reel — press its button and watch one rule at work.

01Ways

243 ways

Symbols pay on neighbouring reels from the left in any row — 243 ways in total.

Press the button to see it.

02Wild

Wild ×2

The Thunderstruck II logo substitutes for all but the hammer and doubles any win it helps make.

Press the button to see it.

03Scatter

Thor’s hammer

Three or more hammers anywhere open the Great Hall of Spins — each visit brings you closer to the next god.

Press the button to see it.

04Free spins

Valkyrie ×5

The first hall: 10 free spins with every win multiplied by 5.

Press the button to see it.

Spin the Asgard reels

A playable 5×3 copy with 243 ways. Spin and see which ways paid and what each god is worth.

Spins0Last win0×Total won0×

This spin pays

0×the total bet

Press Spin to play.

Paytable · × total bet

Values in × total bet are the coin pays ÷ 30; the Wild’s ×2 is not applied here. A toy — no bets, no payouts.

Spin the Great Hall wheel

The Great Hall offers 10, 15, 20 or 25 free spins depending on the god. Here the wheel picks a hall for you, then you play its spins beside it.

Tap the centre to spin the wheel

Free spins—

Multiplier—

Spins left0Wins0Total0×

Spin the wheel first

Tap the centre of the wheel to see what you win.

A toy: in the real game Valkyrie gives 10 spins at ×5, Loki 15 with Wild Magic, Odin 20 with Wild Ravens and Thor 25 with Rolling Reels up to ×5. No bets, no payouts.

By the numbers

96.65%

Return to player

Check the info screen — casinos may use a different setting.

Max win8,000×

× the bet — the most one round can pay.

VolatilityMedium–high

Ways243

5×3 reels

Released2010

Microgaming

Wildstorm5

Reels can turn Wild at random

Thor’s round25

Rolling Reels up to ×5

Inside Asgard

Thunderstruck II — base game — **Base game**243 ways on icy stone reels.

Thunderstruck II — the gods land — **The gods land**Valkyrie, Odin and the logo Wild.

Thunderstruck II — free spins — **Free spins**Loki’s horses fill the reels.

Thunderstruck II — paytable — **Paytable**The logo Wild tops the table.

07 · Our verdict

A legend that still plays well

Thunderstruck II is the sequel that outgrew the original. The Great Hall of Spins gives you a reason to keep coming back — four rounds with very different features, unlocked one by one — and Wildstorm can turn any spin into a full screen of Wilds. The art is from 2010, but the maths and the bonus still hold up.

Reviewed by Victoria Holm · Updated November 10, 2026

+Four very different free-spins rounds
+Wild doubles every win it joins
+Random Wildstorm in the base game
+Max win 8,000×
−Thor’s round takes many visits to unlock
−Dated visuals

8.3OF 10

Very good

Our score

08 · The studio

From Games Global

Microgaming released Thunderstruck II in 2010 and it became one of the most played slots of all time. The game now belongs to Games Global, which still runs it alongside the original Thunderstruck and the newer Wild Lightning and Stormchaser.

More about Games Global

1994Microgaming founded

2010Thunderstruck II

2022Games Global

4Gods in the Hall

Fenrir prowls the hall

The great wolf has slipped his chain and is padding across the frozen floor of the hall on four heavy paws. Tap the floor to send him somewhere, or start a hammer hunt.

Fenrir · 4 × 2-segment legsBest 000 · Steps 0000

Hammer hunt

Thor’s hammers and Viking longships appear on the ice for a few seconds — tap one and Fenrir lopes over: hammers score 3, ships 1. Lightning bolts cost a leg; a horn of mead restores it. Lose three legs or run out of 60 seconds and the hunt is over.