Grand Bison has been catching plenty of attention, so we put it through its paces to see how it really holds up. Built by Red Rake Gaming, it lands as a slot with medium high volatility and a published RTP of 95.42%. It's built with crisp artwork and atmosphere and plays out on a 5-reel grid running 15 paylines. Expect a hit frequency around 30%, which sets the rhythm of play. Top wins are capped at 5,000x your stake, a healthy ceiling worth chasing. The full verdict is below.
Written by Michael Torres · Last updated: February 2026
At its core, Grand Bison is a slot game produced by Red Rake Gaming, finished with a clean, modern look and powered by 5 reels and 15 paylines. The result is medium high volatility paired with a return-to-player rate of 95.42%.
Dig into the bonuses and Grand Bison starts to stand out. Look out for scatter symbols that unlock free spins and extra bonus rounds. The medium high volatility strikes a middle ground that should suit most playing styles. All told, it's a solid entry in the Red Rake Gaming catalogue.
At 95.42%, the RTP is slightly below the industry average of ~96%. While this is typical for many popular slots, players should be aware of the slightly lower theoretical return.
Medium-high volatility means wins come less frequently but tend to be larger when they hit. Players should be prepared for dry spells between bigger wins, requiring a moderate bankroll.
About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.
Grand Bison features scatter symbols that can trigger free spins rounds. Landing the required number of scatter symbols anywhere on the reels activates the free spins feature, giving you extra chances to win without additional bets. During free spins, special modifiers may apply to boost your winning potential.
3.0 / 5 — Good
Grand Bison by Red Rake Gaming is a solid offering that delivers good entertainment value. The 95.42% RTP combined with medium high volatility creates a well-balanced gaming experience.