Return to Player
96.2%
Minimum bet size
0.10
Game category
Video Slots
Volatility
High
Reels
6
Progressive jackpot
No
Popularity
Maximum bet size
100
Game Provider
Thunderkick Gaming
Bonus features
Yes
Paylines
50
Theme
Battle
Second Thunder Online Slot Game
Thunderkick developed Second Thunder, a video slot set on a dark fantasy battlefield in winter. Snow-covered ground, armored knights, and a conflict-driven presentation establish its bleak visual identity.
The game uses a high-volatility mathematical model and has a stated maximum win potential of up to 12,500x the bet. It is aimed at players drawn to riskier slots with strong themes; this review looks at how its features and mechanics shape the experience.
Second Thunder Theme, Visual Style, and Battle Mechanics
Second Thunder has the look of a moving oil painting. Behind the 6x5 grid, heavily armored knights advance away from the player, spears in hand, as rain falls across the scene. The soundscape adds tension, deepening the stark atmosphere of a frozen, deserted battlefield.
The symbols have a sharply metallic look:
- Low-Paying Symbols: Worn helmets, halberds, horns, and shields can pay up to 0.8x for a 6-of-a-kind win.
- High-Paying Symbols: Mythic and predatory images—including eagles, snakes, boars, wolves, and Viking-style warriors—pay up to 10x for six matching symbols.
- Wild Symbol: The crackling thunderbolt substitutes for every symbol except the Scatter.
*The payout chart below is based on a $1.00 bet.
| Symbol | 6x Match | 5x Match | 4x Match | 3x Match |
|---|---|---|---|---|
 | 10x | - | - | - |
 | 10x | 5x | 2x | 1x |
 | 2x | 1.5x | 1x | 0.5x |
 | 1.6x | 1.2x | 0.8x | 0.5x |
 | 1.5x | 1x | 0.8x | 0.4x |
 | 1.4x | 1x | 0.7x | 0.4x |
 | 0.8x | 0.6x | 0.4x | 0.2x |
 | 0.8x | 0.6x | 0.4x | 0.2x |
 | 0.6x | 0.5x | 0.3x | 0.1x |
 | 0.6x | 0.5x | 0.3x | 0.1x |
Top Casinos to Play Second Thunder:
Key Features: Wild Fields and the Strategic Feature Row
Second Thunder has two distinctive mechanics that can turn calm snowfall into a dramatic thunderstorm in seconds.
- Wild Field Feature: This signature feature activates when at least two Wilds land on different reels. A rectangle appears, converting every symbol within its borders into a Wild. Recorded checks observed that larger fields can produce particularly forceful sequences of wins, though results vary.
- Feature Row: This additional line sits above the main reels and may appear randomly with Scatters, Wilds, or multipliers of up to 10x. Multipliers add together rather than replace one another, boosting a win on the reel directly below.
Bonus Game: Making Use of Persistent Multipliers
Landing 3 or more crackling Scatters anywhere on the reels starts the Bonus Game. It begins with 5 Free Spins, with + 2 extra spins awarded for each Scatter beyond the first three.
The Feature Row remains active on every spin during the bonus, increasing opportunities for Wild Fields and additive multipliers compared with the base game. The review also notes retriggers: landing 3 Scatters during the feature awards another 5 spins.
Second Thunder Feature Buy Options and Bet+ Strategy
The review calls the base game “predictable” and reports that its test rounds made the Feature Buy (Bet+) options central to its suggested approach. These purchases still carry the slot’s high-volatility risk.
- Presence of Thor (15x bet): The review says this purchase guarantees an active Feature Row on the first spin.
- Thunderstorm (15x bet): The review says this option guarantees a Wild Field on the first spin.
- Direct Bonus Access (75x bet): Players who want to skip the build-up can buy direct entry to the Bonus Game. The purchase is expensive, but takes players straight to the slot’s feature round.
In the reported testing, the Presence of Thor and Thunderstorm Feature Buys did not produce big wins unless used for more than 15 rounds. The review therefore describes them as costly options with relatively low returns; this observation does not guarantee future results.
Despite its very high cost, Direct Bonus Access was the most consistently reliable option in the reported testing, producing wins of up to 450x the base bet. These are reported observations, not a promise. Given the price, the purchase may be chiefly relevant to risk-taking high rollers.
Top Alternatives to Second Thunder: Similar Slots to Try
- Gates of Olympus 1000 from Pragmatic Play expands on the popular Gates of Olympus slot. It uses the Pay Anywhere system, lists a 96.50% RTP, and puts Zeus at the heart of its theme. The review describes greater volatility, a higher RTP, and triple the maximum win potential as changes that build on the original format.
- Gates of Hades, also from Pragmatic Play, offers a different take on Greek mythology. Cluster Pays, Free Spins, and Wild Multipliers come with high volatility and RTP of up to 96.52%. The slot lists a maximum win of 10,000x the stake, making it another choice for players interested in mythological themes.
Final Verdict: Is Second Thunder Right for High-Volatility Players?
Second Thunder pairs a dark, atmospheric setting with high-volatility mechanics and several interacting features. While its RTP is described as below the broader market average, the combination of Wild Fields and the Feature Row may add momentum to the base game when features appear.
Instead of a light or casual theme, Second Thunder offers a more intense and less predictable session. The review positions it for players who value high volatility, layered feature interactions, and a higher win ceiling over steady or frequent payouts.
Evan Carrington brings more than 12 years of experience in the iGaming industry, specializing in online casino reviews, slot game analysis, and player safety assessments. Their expertise includes casino licensing, RTP, volatility, bonus terms, and withdrawal policies. Combining hands-on reviews with independent research, Evan provides clear, evidence-based coverage to help players understand gambling platforms, their features, and possible risks.
