Game Information
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Provider
Ainsworth
Type
Slots
Release Date
May 17, 2017
Reels
5
RTP
94.38
Volatility
5
Max Exposure
90930
Min Bet
0.01
Max Bet
90
Big Thunder Slot: Comprehensive Data Analysis
Core Game Specifications
| Attribute | Value |
|---|---|
| Developer | Ainsworth |
| Release Date | 2013-10-13 |
| Theme | Jungle, Animals, Adventure |
| Layout | 5×3 |
| Paylines | 30 |
| Bet Range | 0.01–3000 (currency units) |
| Core Mechanics | Wild symbol (gorilla), Scatter symbol triggering free spins, Multiplier symbols, Bonus crown reel, Free spins feature |
| Technology | HTML5, JavaScript |
| Mobile compatibility | Playable on desktop and mobile |
Mathematical & Payout Model
Return to Player (RTP)
94.38%
Volatility
High
Max Win Potential
10000x
Symbols & Paytable Hierarchy
| Tier | Symbol(s) | Function & Value |
|---|---|---|
| Low Tier | 9, 10, J, Q, K, A | Provides small, frequent wins to maintain gameplay. |
| Mid Tier | Mask, Drum, Snake, Shield, Waterfall | Thematic items offering moderate payouts. |
| Wild | Gorilla | Acts as a substitute / feature trigger per game rules. |
| Scatter | Big Thunder logo | Triggers free spins / bonus round when enough appear. |
Big Thunder Bonus Features Mechanics
| Feature | Trigger | Initial Award | Core Mechanic | Enhancement/Retrigger |
|---|---|---|---|---|
| Free Spins | 3+ scatter symbols | 15 free spins | Free spins with higher chance of big combos and multipliers | Retrigger possible with additional scatters |
| Bonus Crown Reel | Five‑of‑a‑kind plus crown symbol on extra reel | Extra reel appears with crown to award mini/minor/major/major jackpot | Major prize up to 10,000× line bet |
Frequently Asked Questions (FAQ)
| What is the RTP of Big Thunder? | The RTP is 94.38%. |
| When was Big Thunder released? | It was released on October 13, 2013. |
| What is the maximum win multiplier? | You can win up to 10,000× your line bet via the bonus crown reel. |
| What features does the game include? | It includes wilds, scatters, multipliers, free spins, and a bonus crown reel. |
| What is the volatility level? | The game has high volatility. |
| How many paylines does it have? | There are 30 fixed paylines. |
| Can free spins be retriggered? | Yes, additional scatters during free spins can retrigger the feature. |
Big Thunder Performance Summary: Strengths vs. Weaknesses
Strengths
- High maximum win potential (10,000×)
- Engaging bonus crown reel mechanic
- Mobile‑friendly HTML5 design
- Classic jungle/tribal theme with vibrant symbols
Weaknesses
- Below‑average RTP (94.38%)
- High volatility may deter risk‑averse players
Overview
Big Thunder is a high‑volatility 5‑reel, 30‑payline jungle‑themed slot by Ainsworth, released October 13, 2013. It features wilds, scatters, multipliers, free spins, and a bonus crown reel, with an RTP of 94.38%.
Rachel Pine is our slots expert who has worked in the online gambling industry for 10+ years. Over the course of her career, Rachel has reviewed more than 30,000 slots.
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