Return to Player
96.2%
Minimum bet
0.10
Game category
Video Slots
Volatility
High
Reels
6
Progressive jackpot
No
Popularity
Maximum bet
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 winter battlefield. Snow-covered ground, armoured knights and a conflict-driven presentation define its bleak look.
The game has a high-volatility mathematical model and a stated maximum win potential of up to 12,500x the bet. It is aimed at players drawn to riskier slots with a strong theme; this review looks at how its mechanics and features 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 armoured knights move away from the player with spears in hand as rain falls across the scene. The soundscape adds to the tension, strengthening the stark mood of a frozen, deserted battlefield.
The symbols have a sharp, metallic look:
- Low-Paying Symbols: Worn helmets, halberds, horns and shields can pay up to 0.8x for a 6-of-a-kind hit.
- 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 sparking 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
Two distinctive mechanics define Second Thunder, with the potential to turn a quiet snowfall into a dramatic thunderstorm in seconds.
- Wild Field Feature: The signature feature starts when two or more Wilds land on separate reels. A rectangle activates, turning every symbol within its boundary into Wilds. Recorded checks found that large fields can produce particularly powerful win sequences, though outcomes vary.
- Feature Row: This extra line sits above the main reels and may appear at random with Scatters, Wilds or multipliers of up to 10x. Its multipliers add together rather than replace one another, combining their values to enhance a win on the reel directly below.
Bonus Game: Using Persistent Multipliers
Landing 3 or more crackling Scatters anywhere on the reels triggers the Bonus Game. It starts with 5 Free Spins, plus + 2 additional spins for each Scatter beyond the first three.
The Feature Row remains active on every bonus-round spin, creating more opportunities for Wild Fields and additive multipliers than in the base game. The original review also points to retriggers: landing 3 Scatters during the feature awards 5 extra spins.
Second Thunder Feature Buy Options and Bet+ Strategy
The original review calls the base game “predictable” and reports that its test rounds made 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 entry straight into the Bonus Game. It is an expensive option, but takes the player directly to the slot’s feature round.
During 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 predict 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, and the price makes the purchase mainly relevant to risk-taking high rollers.
Best Second Thunder Alternatives: 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 centres its theme on Zeus. The review describes its higher volatility, higher RTP and triple maximum-win potential as developments of the original format.
- Gates of Hades, also from Pragmatic Play, revisits Greek mythology with a different style. Cluster Pays, Free Spins and Wild Multipliers come with high volatility and an 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 combines a dark atmosphere with mechanics built around high volatility and interacting features. Although its RTP is described as below the broader market average, the interplay between Wild Fields and the Feature Row can add momentum to the base game when features appear.
Rather than offering a light or casual theme, Second Thunder delivers a more intense and less predictable session. The review positions it for players who value high volatility, layered feature interactions and higher win ceilings over steady or frequent payouts.
Evan Carrington brings more than 12 years of experience in the iGaming industry, with a focus on reviewing online casinos, assessing slot games and examining player safety. Their work covers casino licensing, RTP, volatility, bonus terms and withdrawal policies. Drawing on practical testing and independent research, Evan provides clear, evidence-based reviews to help players understand gambling platforms, their features and possible risks.
