3 Thunders delivers an electrifying classic fruit slot experience from renowned provider Endorphina. This 3-reel thunderstorm adventure combines traditional fruit machine symbols with powerful lightning effects for an unforgettable gaming session. Players can expect familiar symbols including lucky red sevens, bells, watermelons, lemons, plums, and cherries, all enhanced by special Scatter features.

• Lightning Scatter symbols trigger up to 20 free spins • All Sevens transform into Wilds during bonus rounds
• Bet range: €0.01 to €50 per spin • Mobile optimized for desktop, tablet, and smartphone play

The mighty lightning bolt serves as the game's Scatter symbol - land three to unleash the storm of free spins where sevens become powerful Wild substitutes. Experience this classic slot with modern features at 21.com.