Welcome Offer
18+. New Players only. Min. deposit $20. Max bonus of 100% up to $50 on 1st deposit, 25% up to $100 on 2nd deposit and 50% up to $150 on 3rd deposit. Wagering required applies on all bonuses x35. 20 extra spins will be credited daily for 5 days upon first deposit. Extra spins are available on select games only. Any unused spins will expire 24hours after issue. Full T&Cs apply.
Treasures of Mjolnir

Play Treasures of Mjolnir slot online at King Casino

*Any values mentioned are subject to change.


About This Game

This is a 5 reel 4 row video slot game.

The objective of the game is to spin the reels so the symbols land in different combinations.

Winning combinations are highlighted on the reels and a payout is awarded.

Payline Rules

This game includes 20 fixed paylines.

The number of paylines played is fixed.

A payline is a pattern of adjacent symbol positions that runs in a line across the reels.

A win is awarded when matching symbols land adjacent to each other on a payline.

Payline wins run from left to right, starting from the first slot reel.

Bet Rules

Each spin played costs a total bet amount.

The total bet is based on the initial bet placed, multiplied by the cost of the paylines played.

Total Bet: Sets the current bet value.

Payout Rules

The payout value is based on the winning combination formed.

The total payout is the sum of all payline wins resulting from a spin.

Only the highest winning combination is awarded per symbol combination.

The Paytable displays the payout for each symbol combination based on the current bet.

The win up to value displayed is rounded down, and is approximately the highest potential win achievable on a single spin.

Wild Symbols

Wild symbols can substitute for other symbols to complete winning combinations.

Wild symbols can substitute for all symbols except gem, jackpot and bonus symbols.

When a winning line starts with a Wild, Wilds will substitute to create a highest paying combination.

Wild Burst Feature

There is a spin counter on top of the reels.

The counter spins from 50 to 0 and then resets.

When the counter reaches 0, Wild Burst features are unlocked.

Counter is removed once all Wild Burst features are unlocked.

Landing Wild Burst symbols triggers a random unlocked Wild Burst feature.

Regular Thunder and Double Thunder symbols are available from the first spin.

All features create a fiery zone on the reels and all symbols in that zone turn Wild.

Regular Thunder symbol has no additional features.

Double Thunder symbol adds an additional Wild Burst symbol and creates an electric zone.

Respin Wild Burst feature is unlocked after 50 spins.

Respin symbol locks all winning combinations and respins the reels.

If there are no non-winning symbols to respin, the value of the initial spin will be awarded twice.

No Low Wild Burst feature is unlocked after 100 spins.

No Low symbol removes all Low value symbols. Reels then cascade and new symbols are dropped.

Wild Stacks Wild Burst feature is unlocked after 150 spins.

Wild Stacks symbol converts 1-3 reels with wilds into Wild Stacks. Any existing wilds and Wild Burst on these reels become x2.

Wild Multiplier Wild Burst feature is unlocked after 200 spins.

Wild Multiplier symbol upgrades any wilds or Wild Burst into x2 – x10 multiplier wilds.

Wild Multipliers are additive when they occur in a winning combination.

UpZones LockNWinâ„¢ Feature Selection

The UpZones LockNWinâ„¢ feature may randomly trigger when Bonus symbols are collected to Bonus Pots.

There are 4 bonus symbols: Bronze, Silver, Gold and Diamond.

Bonus symbols get collected to respective Bonus Pots on top of reels.

Bonus Pots grow with collection of Bonus symbols.

The growth of the pots is only for visual purpose, it doesn’t affect the chance to trigger a feature.

Only 1 feature can be triggered at a time.

Each Pot has a fixed number of Spins and UpZonesâ„¢.

Bronze – 3 Spins – 3 UpZonesâ„¢.

Silver – 4 Spins – 4 UpZonesâ„¢.

Gold – 5 Spins – 5 UpZonesâ„¢.

Diamond – 6 Spins – 6 UpZonesâ„¢.

UpZonesâ„¢ LockNWinâ„¢ feature can be gambled for more spins and UpZonesâ„¢.

Successful gamble awards a higher tier feature.

Unsuccessful gamble pays nothing.

Bronze has an upgrade chance of 57.85%.

Silver has an upgrade chance of 59.71%.

Gold has an upgrade chance of 66.54%.

Diamond cannot be gambled.

UpZones LockNWinâ„¢ Feature

UpZones LockNWinâ„¢ feature plays on 5 reels x 4 rows with an additional top row with special symbols.

Coins land in the main reel set.

Coin appears only in the UpZones LockNWinâ„¢ feature.

Coins can have values between 0.5x and 100x the total bet.

UpZonesâ„¢ are special positions highlighted on the reels.

Landing Coins in the UpZonesâ„¢ triggers a spin of the top row and creates an additional UpZonesâ„¢.

Top row spins horizontally and has Collect, Boost, Multiplier, Spin and Jackpot symbols.

These symbols appear only in the top row in the UpZones LockNWinâ„¢ feature.

Collect symbol collects all Coins when it lands.

Boost symbol increases the value of all Coins by 1x – 25x bet.

Multiplier symbol multiplies a random Coin symbol by x2 – x100.

Multiplier symbol will not multiply Coins that are already multiplied.

Spin symbol awards 2 to 3 additional spins.

Jackpot symbol triggers the Jackpot feature.

UpZones LockNWinâ„¢ feature ends when all positions are filled or spins are completed.

Bonus Wheel Instant Trigger

Collecting a Gem symbol on all reels will trigger the Bonus Wheel.

Bonus Wheel awards one of the Bronze, Silver, Gold or Diamond UpZones LockNWinâ„¢ features.

Gem symbols can be collected over several spins and more than one Gem symbol can land at a time.

Jackpot Wheel

Collecting jackpot coins grants a chance of triggering a spin of the Jackpot wheel.

There are 4 jackpot coins: mini, minor, major and mega.

Jackpot coins land in the base game only.

More than one jackpot coin of the same type may land in a single spin.

Each jackpot coin increments the value of the corresponding Jackpot by 1x bet.

The jackpot wheel awards 1 of 4 guaranteed jackpots.

The starting mini Jackpot value is 10 x Bet and is capped at 25 x Bet.

The starting minor Jackpot value is 25 x Bet and is capped at 100 x Bet.

The starting major Jackpot value is 250 x Bet and is capped at 500 x Bet.

The starting mega Jackpot value is 2500 x Bet and is capped at 5000 x Bet.

Jackpot wheel triggers only once even if multiple Jackpot coins are collected.

Once a jackpot has been awarded, that specific jackpot will reset to its starting value.

The graphical progress bar collection in the game is purely for visual entertainment and as such does not influence awarding a jackpot.

Game Controls

Spin button: Starts a reel spin.

Bet: Displays the current total bet.

Bet button: Displays options to change the current bet.

Win: Displays the most recent win.

Balance: Displays the current balances.

Exit button: Exits the game.

Help button: Displays help and additional information.

Menu button: Opens the game menu.

Spacebar: Pressing this keyboard button will start or stop a reel spin. This does not influence the results of the spin.

Some settings and features may not be available in this game.

Desktop Controls

Bet controls: Increase or decrease the bet with the plus and minus symbols.

Info button: Opens the paytable menu.

Max Bet button: Sets the current bet to the maximum value.

Game Menu

Home button: Exits the game.

Settings button: Displays the game settings.

Paytable button: Displays payout tables and game rules.

Banking button: Displays the banking page.

Help button: Displays help and additional information.

Close button: Closes the game menu.

Sounds: Enables game sounds.

Some settings and features may not be available in this game.

Big win toggle: Toggles big win celebration display on or off.

Splash page toggle: Toggles the splash page display on or off.

Bet Settings

Bet Amount: Sets the current bet value.

Bet Value buttons: Sets the current bet to the selected value.

Quick Bet buttons: Sets the current bet to the selected value.

Min Bet button: Sets the current bet to the minimum value.

Max Bet button: Sets the current bet to the maximum value.

Game Settings

Music: Enables game music.

Sounds: Enables game sounds.

Big Win: Enables big win animations.

Paytable button: Displays payout tables and game rules.

Settings button: Displays the game settings.

Splash page toggle: Toggles the splash page display on or off.

Some settings and features may not be available in this game.

Additional Information

Some settings and features may not be available in this game.

Malfunction voids all pays and plays.

Any changes to game rules will be conducted in accordance with regulatory requirements.

In the event of a disconnection, the final game state is displayed on return to the game.

The balance is updated with the amount won or lost.

The results of the last game played are displayed.

If a request does not reach the server before disconnection, the results of the previous game played are displayed.

Any features in progress that require interaction or selection can be continued.

Return to Player

The return to player (RTP) is the theoretical statistical percentage of the total money bet in a game that is paid out as winnings over time.

The RTP is shown in-game.

Depending on the game you are playing, the RTP value may be defined as a single value or defined by the different stages or modes of the game.

The probability of triggering certain game events may change during gameplay depending on the current game state or progress.

Values are calculated initially by dividing the total payouts by the total bets from a simulation of numerous game rounds.

Treasures of Mjolnir Demo Mode & Free Play Explained

A common way for players to explore a slot is by searching for a Treasures of Mjolnir demo or Treasures of Mjolnir free play option. Since this website does not offer demo or free play versions, we’ve created this page to give you the same type of insight in a different way.

Here, you’ll find a clear outline of how the game is structured, including its main features, bonus rounds, and the role of special symbols.

This overview provides the knowledge you could gain from trying a Treasures of Mjolnir demo version, making it easier to understand the experience in advance.


*All values (Bet Levels, Maximum Wins etc.) mentioned in relation to this slot game are subject to change at any time. Game features mentioned may not be available in some jurisdictions.