Second Thunder is a Norse mythology video slot from Thunderkick that places Thor against the beasts of Ragnarok. It runs on a 5x6 grid with 50 paylines, a hidden feature row and a high-volatility profile. This review explains how the game plays, what its numbers mean for your bankroll and how to approach it safely. A free demo is available on this site.
Gameplay and Features
The base game uses five reels and six rows, with wins formed across 50 paylines. Scatter Pays add another route to a payout, since scatter symbols can reward without needing to land on a specific line.
The main hook is the Wild Field feature, along with a hidden feature row above the grid where Wilds, Scatters and Reel Multipliers can appear without warning. Because the row sits outside the standard grid, it can change the outcome of a spin in ways that are not visible beforehand.
Bonus Game
When the Bonus Game is triggered, the feature row stays fully active. That means the same Wilds, Scatters and Reel Multipliers can keep appearing during the bonus, which is where the largest payouts tend to come from. Check the in-game paytable for the exact trigger conditions.
Math Profile: RTP, Volatility and Max Win
The official published RTP is 94.2%. That is a long-run theoretical average across a very large number of spins, not a prediction for a single session, and it sits on the lower side compared with many modern slots. Operators can run different RTP versions, so check the in-game info screen before you play.
Volatility is high. Expect frequent stretches of small or empty spins, with the bulk of the return concentrated in rare feature hits. The maximum win is 12500x your stake, which is a ceiling that is very unlikely to be reached in ordinary play.
What This Means for Your Bankroll
High volatility calls for smaller stakes relative to your budget, so that a dry spell does not end the session early. Set a session budget in advance and treat the demo as a way to learn the feature row before spending real money.
Fairness, Licensing and Responsible Play
Licensed online slots use a random number generator to determine each outcome. Independent testing labs such as eCOGRA, iTech Labs and BMM Testlabs examine RNG output and payout behaviour to confirm that results are random and that stated RTP figures are consistent with real play.
Only play at casinos that display a valid licence from a recognised regulator such as the MGA or UKGC, and confirm it with the regulator's own register. Gambling is for adults aged 18 and over. Use deposit and time limits, never chase losses, and stop if play stops being enjoyable.
Frequently Asked Questions
- Is there a free demo of Second Thunder?
- Yes, a free demo is available on this site, so you can try the feature row and Wild Field without staking real money.
- What is the RTP of Second Thunder?
- The official published RTP is 94.2%. Operators may offer different versions, so check the in-game info screen.
- How volatile is Second Thunder?
- Volatility is high, meaning wins can be infrequent but larger when features land. Plan stakes with that variance in mind.
- What is the maximum win?
- The maximum win is 12500x your stake. It is a theoretical cap and rarely reached.
- How can I verify a casino's licence?
- Find the licence details in the casino footer, then check them on the issuing regulator's official register, such as the MGA or UKGC.






