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Read our review of Grumpy Grandpa by Ninja Gaming — return-to-player, paylines, bet range and mechanics.
Grumpy Grandpa
| Attribute | Details |
|---|---|
| Provider | Ninja Gaming |
| Type | Video Slots |
| Variance | High |
| RTP | 94% |
| Paylines | 14 |
| Layout | 5-4 |
| Min bet | $0 |
| Max bet | $0 |
| Max win | x15000.00 |
| Released | 2026-02-20 |
| Technology | JS, HTML5 |
Features
Additional Free Spins · Bonus Game · Bonus symbols · Buy Feature · Expanding Reels · Free Spins · Random multiplier · Scatter symbols · Sticky Symbols · Symbols collection (Energy) · Wild · Wilds with multipliers
Themes
Alcohol · Cats · Cowboys · Forest · Horror · Owls · Santa Claus · Snow · Weapons · Wild West · Winter · Wood
Where to play for real money
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