by Hacksaw GamingReleased Sep 18, 2025
Norse mythology slot with player-choice bonuses. Pick between coin-collecting Thunder Respins or sticky multiplier wilds. Five bonus modes and a 15,000x max win.


Stormborn splits its bonus system into two fundamentally different gameplay styles, and you pick which one you want. Land three scatters and choose between a coin-collecting respin path or a sticky multiplier wild path. Land four and you get upgraded versions of the same choice. It's the most complex bonus menu Hacksaw has put into a standard slot - five distinct bonus modes, each with its own win engine.
The 5x4 grid runs 14 paylines with a standard Norse mythology skin. Icy blues, silver armor, a Thor-like figure wielding lightning. The paytable is reasonable: the top symbol pays 10x for five of a kind, lows at 2x. But like most Hacksaw designs, the real payouts come from bonus features.
Five or more coin symbols on any spin trigger Thunder Respins. All coins lock in place. Respins continue while new coins or Collector Chests land. When the sequence ends, every coin reveals its value - Bronze (0.5x to 4x), Silver (5x to 20x), Gold (25x to 500x). Collector Chests absorb the total value of all coins on the grid and multiply by x1 through x20.
A grid filling with Silver and Gold coins plus a Chest at x10 or x20 produces payouts that dwarf anything the paylines generate. The math is straightforward: more sticky coins per sequence, higher values revealed, bigger chest multipliers.
The coin path bonuses. Stormbreaker (3 scatters): 3 free spins where each spin automatically triggers a Thunder Respin sequence with a guaranteed minimum of 2 coins and 1 Collector Chest. Three guaranteed respin sequences, each starting with a base of coins and a chest.
Legacy of Lightning (4 scatters): same 3 spins, but the minimums jump to 4 coins plus 1 Chest, and Mjolnir joins the grid. Thor's hammer multiplies random coins by x2 through x20 before Chests collect. A Gold Coin at 100x hit by a x10 Mjolnir becomes 1,000x, then gets collected by a Chest that multiplies everything again.
The wild path bonuses. Perfect Storm (3 scatters): 10 free spins with sticky wild symbols carrying multipliers from 1x up to 100x. Multiple wilds in the same payline add their multipliers together. Fill an entire reel with 4 wilds and it becomes a Wild God Reel with combined multiplier value. Retrigger possible with extra scatters.
Hammer of the Heavens (4 scatters): Perfect Storm mechanics plus Mjolnir at the end of each spin, adding random multipliers (x2-x20) to existing wilds or Wild God Reels. The Mjolnir boost lasts only for that spin's evaluation, then wilds revert to their original values. But during that moment, a Wild God Reel at 30x hit by a x15 Mjolnir evaluates at 450x applied to every payline it touches.
Five scatters unlock the Hidden Epic. Five free spins using Legacy of Lightning mechanics with guaranteed minimums of 5 coins, 1 Collector Chest, and 1 Mjolnir per Thunder Respin sequence. Five consecutive sequences, each starting loaded with coins, a chest, and Mjolnir multiplying everything before collection.
Stormbreaker and Legacy are concentrated - 3 spins with guaranteed respin sequences that reliably produce decent payouts. Perfect Storm and Hammer spread across 10 spins with sticky wilds that need time to accumulate. The coin path gives you a floor; the wild path gives you a ceiling. Players who prefer consistent returns pick the respins. Players chasing the 15,000x go for sticky wilds.
Base game between bonus triggers is ordinary. 14 paylines, no random features, Thunder Respins need 5+ coins which doesn't happen often. The game loads everything into its bonus system and asks you to grind for triggers or buy your way in.
Game data verified by Spinoxy Media Ltd editorial team. RTP and specifications sourced from official provider documentation.