You can feel the thunder roar as you spin to win in Thunder Coins: Hold and Win! This electrifying online slot game from Casino Spirit offers a lightning-fast playing experience packed with stormy features. The graphics flash with bold colors and animations that evoke the raw power of a raging thunderstorm. Crackling lightning bolts crash across the reels with every spin. The booming thunder sound effects add drama and excitement. Even the slot symbols tie into the stormy theme with rain clouds, lightning rods, batteries, coins, and stormy wilds.

History and Evolution

The Thunder Coins slot game was developed by casino in 2021 as part of their Storm Series line of slots featuring weather-related themes. The Storm Series built upon the popularity of previous Nature Series slots which included titles like Rainforest Rumble and Desert Jewels. With Thunder Coins, casino incorporated new Hold and Win mechanics not seen in their previous games. This feature added an extra layer of strategy and engagement for players as they decide when to lock reels during free spins. The electrifying graphics and booming thunder sound effects also helped Thunder Coins stand out in the competitive online slots market saturated with Egyptian, magic, and fruit themes. Since its launch, Thunder Coins has become one of most played slots. Its high volatility provides heart-pounding gameplay while the Hold and Win feature offers tremendous winning potential. Casino continues updating and improving the game to keep players coming back spin after spin in search of stormy wins.

Gameplay Mechanics

Thunder Coins: Hold and Win is played on a 5×3 reel set with 25 fixed paylines. The min/max bet sizes range from $0.25 to $25 per spin. The slot includes classic features like wilds, scatters, and free spins. The Hold and Win mechanic also adds a unique strategic element. When the bonus is triggered, players can select 1-5 reels to hold in place for the duration of the feature. On each spin, held reels remain locked while others respin. With each respin, the multiplier increases up to 100x. Respins continue until no new wins are awarded. Players can end the feature manually or play out all 50 possible respins. Expanding Stormy Wilds are also in play during the free games. When a wild lands, it expands to cover its entire reel. This helps create bigger winning combinations for players to capitalize on.

Payout Overview

Symbol	Type	Multiplier	Max Payout
Thunder Wild	Wild	–	–
Battery	High Payer	75x	7,500 coins
Lightning Bolt	High Payer	50x	5,000 coins
Gold Coin	Medium Payer	20x	2,000 coins
Silver Coin	Medium Payer	10x	1,000 coins
Bronze Coin	Low Payer	5x	500 coins
A, K, Q, J	Low Payer	3x	300 coins
10, 9	Low Payer	2x	200 coins

Features

Key features of Thunder Coins: Hold and Win include:

1. Hold and Win Bonus: Lock 1-5 reels in place during up to 50 free respins for big wins at Spirit
2. Expanding Stormy Wilds: Wilds expand to cover their entire reel during bonus games
3. Electrifying Graphics: Crackling lightning and booming thunder effects
4. High Volatility: Frequent payouts keep intensity levels high
5. Wide Bet Range: Bets between $0.25 – $25 accommodate all bankrolls

Demo Play

Thunder Coins: Hold and Win offers an unlimited demo play mode for players to test out the game risk-free. Simply click “Play for Fun” to access the demo version. The demo play features the exact same graphics, sounds, symbols, and gameplay as the real money version. Players can spin the reels and trigger bonuses to get a feel for the slot’s volatility and features. The only difference is demo play does not involve actual cash bets or payouts. Demo play allows newcomers to learn the Thunder Coins slot machine inside out before risking funds. It also lets experienced players devise new strategies by experimenting freely with the Hold and Win mechanic. Thanks to unlimited play, you can spin for hours and discover everything this stormy slot has to offer.