Game Information
Show More
Provider
Greentube
Type
Slots
Release Date
October 15, 2019
Reels
5
RTP
95.19
Volatility
3
Max Exposure
180000
Min Bet
0.01
Max Bet
2
Max Win per Spin
40000
Bat Stax Slot: Comprehensive Data Analysis
Core Game Specifications
| Attribute | Value |
|---|---|
| Developer | Novomatic (Greentube) |
| Release Date | 15 October 2019 |
| Theme | Halloween, Spooky, Bats, Graveyard |
| Layout | 5×3 |
| Paylines | 20 |
| Bet Range | $0.20–$50 (or £0.20–£50) |
| Core Mechanics | Expanding bat overlay symbols, Free spins with retriggers, Wild substitution (witch’s hat), Scatter‑triggered bonus |
| Developer | Novomatic (Greentube) |
| Technology | HTML5, mobile‑optimized |
Mathematical & Payout Model
Return to Player (RTP)
95.19–95.20%
Volatility
Medium
Max Win Potential
1000x
Symbols & Paytable Hierarchy
| Tier | Symbol(s) | Function & Value |
|---|---|---|
| Low Tier | 10, J, Q, K, A | Provides small, frequent wins to maintain gameplay. |
| Mid Tier | Spider, Black Cat | Thematic items offering moderate payouts. |
| High Tier | Owl, Bat, Witch’s Hat (Wild) | Highest paying symbols. Top hits available with full combinations. |
| Wild | Witch’s Hat | Acts as a substitute / feature trigger per game rules. |
| Scatter | Pumpkin | Triggers free spins / bonus round when enough appear. |
Bat Stax Bonus Features Mechanics
| Feature | Trigger | Initial Award | Core Mechanic | Enhancement/Retrigger |
|---|---|---|---|---|
| Expanding Bat Symbol | Landing 3–5 bat symbols | Bats expand to cover reels (3 bats → reels 1–3; 4 → reels 1–4; 5 → all reels) | Filling all reels with bats awards up to 100× stake | |
| Free Spins | Landing 3–5 pumpkin scatters | 10, 15, or 25 free spins + 2×, 10×, or 25× stake | During free spins, bats expand on reels 1–2 and trigger respins | Can retrigger free spins with more scatters |
Frequently Asked Questions (FAQ)
| What is the RTP of Bat Stax? | The RTP is approximately 95.19–95.20%. |
| What is the maximum win? | You can win up to 1000× your stake by filling the reels with wilds. |
| How do the bat symbols work? | Landing 3–5 bats expands them to cover reels, potentially up to all reels for big wins. |
| How are free spins triggered? | By landing 3–5 pumpkin scatter symbols, awarding free spins and stake multipliers. |
| Can free spins be retriggered? | Yes, landing more pumpkin scatters during free spins retriggers additional free spins. |
| What is the volatility level? | The game has medium volatility. |
| What is the layout and paylines? | It uses a 5×3 layout with 20 fixed paylines. |
| What is the wild symbol? | The witch’s hat acts as the wild and substitutes for regular symbols. |
Bat Stax Performance Summary: Strengths vs. Weaknesses
Strengths
- Engaging Halloween theme with immersive visuals and sound
- Expanding bat feature offers exciting win potential
- Free spins with retriggers add depth to gameplay
- Mobile‑optimized and accessible
Weaknesses
- RTP is slightly below industry average
- Medium volatility may not suit high‑risk players
Overview
Bat Stax is a Halloween‑themed online slot by Novomatic (Greentube) featuring a 5×3 layout with 20 fixed paylines. It offers medium volatility, an RTP around 95.19–95.20%, and spooky symbols like bats, owls, cats, spiders, pumpkins, and a witch’s hat wild. Key features include expanding bat symbols, free spins with retriggers, and a maximum win of up to 1000× your stake.
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.
Latest posts by Rachel Pine (see all)
- 11 Best Drop and Wins Slots Everyone’s Playing Right Now (UK) - January 14, 2026
- Free Slots vs Real Money Slots - October 3, 2025
- Top 6 Low Volatility Slots in the UK - September 30, 2025