Vikings Go Berzerk: When Heroes Turn Wild

Yggdrasil set the base game on five reels and three rows with 25 fixed paylines, with four named viking heroes appearing as high-value symbols alongside standard card icons. Free spins trigger with three scatter symbols, and the number awarded depends on which of the four vikings lands as part of the trigger.

The berzerk feature is what separates this from a standard free spins bonus: before the round starts, each viking symbol on the reels fights an enemy, and a successful fight turns that viking wild for the round's duration. Losing a fight instead awards a multiplier, so every free spins session opens with a randomised outcome that shapes how the rest of the round plays out — heavy on wilds, heavy on multipliers, or some mix of both.

RTP is listed at 96.2% with high volatility, and because the berzerk outcome is randomised at the start of each bonus trigger, no two free spins rounds here play out quite the same way. Free spins offers built around Vikings Go Berzerk inherit that same unpredictability — the spin count matters less than which combat outcomes land at the start.

Boost Casino carries Vikings Go Berzerk in its Yggdrasil lineup, a fit for players drawn to Norse theming with a bonus mechanic that goes beyond a simple wild multiplier.