12 Bolts of Thunder Demo Slot by Thunderkick Free Play

12 Bolts of Thunder is an online Slot from Thunderkick.

Quick Facts

- Layout: 5 reels x 4 rows

- Paylines: 20 fixed

- Key mechanics: Hammer Win feature, Upgradeable Prize Ladder, Bonus Buy

- Special symbols: Wild Winged Shield, Scatter Door, Mjolnir Hammer

How the Game Plays

12 Bolts of Thunder is a Norse-themed slot from Thunderkick that centers on the legendary power of Mjolnir. Set against a backdrop of golden clouds and soaring peaks, the game features a 5x4 grid where wins are formed by matching symbols across 20 fixed paylines. The paytable blends classic slot icons like Triple 7s, bars, bells, and horseshoes with mythology-inspired royals. The primary objective is to collect Hammer symbols on the three center reels to trigger instant cash awards from a dedicated prize ladder visible next to the grid.

Free Spins Explained

Landing three, four, or five Scatter symbols triggers the Bonus Game, awarding 6, 9, or 12 free spins respectively. This round significantly increases the potential of the Hammer Win mechanic. Every time a Hammer win occurs, the entire prize ladder levels up, removing lower multipliers and increasing the higher ones. There are five possible upgrade levels, and reaching the final tier allows the top reward to hit 30,000x the stake. Furthermore, every Hammer win during the feature grants three additional free spins to keep the storm raging.

Hammer Win Feature Explained

The Hammer Win feature is active in both the base game and the bonus round. When four or more Hammer symbols land anywhere on the second, third, and fourth reels, the game awards an instant payout based on the current ladder values. In the base game, this ranges from 2x for four hammers up to 1,000x for twelve. During the free spins, these values can be dramatically enhanced through the level-up mechanic, providing the path to the game's maximum win capacity.

Click the Play for Free button to load the 12 Bolts of Thunder demo, test its features and payouts and decide if it is a game you enjoy.