Bison Moon: Thunder Charge is a 5-reel, 3-row slot from Northern Lights. The goal is to spin the reels until a winning combination appears. Winning combinations are highlighted on the reels and pay out.

Return to Player (RTP) is the theoretical statistical percentage of all player wagers in a game that is paid out as winnings over time.
The probability of triggering certain game events may change during the game depending on the state and progress of the current game.

Wild symbols. Wild symbols substitute for regular symbols only. Wild symbols appear only in the main game.

Moon Symbols. Red Moon symbols appear in the main game.

Blue Moon symbols appear in the Thunder Charge Bonus. Each Moon symbol unlocks a cash prize.

Look for 6 or more Red Moons to trigger the Thunder Charge Bonus. Cash prizes awarded by Red Moon symbols carry over into the feature. The feature begins with rows 1 and 6 locked. A Blue Moon symbol with a cash prize is locked onto the reels. If the feature is triggered via the Jackpot Wheel, the cash prize awarded is not locked onto the reels.
Three re-spins are awarded. Each symbol that is not locked into place spins individually. During re-spins, only Blue Moons, Keys, and empty positions appear on the reels. Any symbol that lands resets the number of re-spins to 3.
The Buffalo Moon cash prize is awarded for each new Blue Moon symbol landing on the reels. Each time a Blue Moon symbol lands, the Buffalo Moon cash prize increases.

Landing two Key symbols unlocks row 1, and landing two more Key symbols unlocks row 6. Key symbols appear only in the Thunder Charge Bonus. Blue Moon symbols landing on locked rows do not reveal their value until the row is unlocked. If all positions are filled with Moon symbols before the end of the re-spins, all rows are automatically unlocked. Filling all positions with Moon symbols, including locked rows, awards the Grand Jackpot. The feature ends when all positions are filled with Blue Moon symbols or when the re-spins end.
Charged Bet adds additional Red Moon symbols to the reels. Activate to increase your chance of triggering the Thunder Charge Bonus. Charged Bet multiplies your current bet by 2.5x. Charged Bet does not affect line wins or payouts for Moon symbols.

Land 5 Red Moon symbols to trigger the Stellar Moon Bonus. All cash prizes awarded on Moon symbols are paid out and multiplied by 1x, 2x, 3x, 4x, 5x, 10x, 20x, 50x, or 100x.
Landing Red Moon symbols gives you a chance to trigger the Moon Collector Bonus. Landing Red Moon symbols are collected into the Moon Collector. When activated, the Moon Collector drops additional Moon symbols onto the reels to trigger or enhance the Stellar Moon Bonus or Thunder Charge Bonus.
There’s a chance to trigger the Bison Stampede at the end of each spin in the main game. Bisons rush across the reels, activating one of two bonus features:
Bison Stampede is only available in the main game.

The Lightning Eagle symbol accumulates in the Lightning Eagle Bonus Meter. Land Lightning Eagles on all reels to trigger the Lightning Eagle Jackpot Wheel. The jackpot wheel has dual rows. Each row awards one of five jackpots, a cash prize, or a Thunder Charge Bonus. Cash prizes are x5, x20, x50, x75, or x250.
This game has 25 paylines. The number of playable paylines is fixed. A payline is a series of adjacent symbols lining up on the reels. The player wins when identical symbols land on adjacent positions forming a payline. Payline wins are calculated from left to right, starting from the first reel.












