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Thor’s Lightning Online Slot Machine – Free Play & Review

It’s a Nordic themed game, with the mythology of the region being used as inspiration. That in itself is not unusual, but the large game area and the quality of the symbols does help it stand out.

The symbols are split between runes and images representing hammers, wolves or crows, among others. I enjoyed the look of it overall, but not the choice of symbols, those could’ve been more interesting.


Red Tiger Gaming tends to have a certain way of doing things, so many of their older games feel very similar. This has changed lately, and Thor’s Lightning is one of their more unique releases, especially when you look at the layout and the way the game is organized. They always deliver awesome graphics in their slots, and they have a mix of Western and Asian style themes to offer in their collection, so they cover both major markets.

Basic Information

Red Tiger Gaming
Free Spins
Wild Symbol
Special Bonus Game
Online & Mobile
Thor’s Lightning screenshot 1
Thor’s Lightning screenshot 2

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How To Play It

Setting up the game and getting started should be fairly easy. The Stake button lets you pick the wager for the round, without any mention of lines or line bets. You have a list with values between $0.20 and $$40, and you pick one that works for you.

7×7 reels and a Cluster Pays system await for you inside. The game area is the one that feels a bit unusual here. While it’s a game with Cluster Pays, so you need matching symbols that are clumped together, it also has a locked area in the middle of the reels, where you get access when you form winning combinations and during the free spins, which is when there is the highest potential.

Special Features

The simplest feature that you can expect, is the wild symbol. It’s clearly marked with its own logo, so it’s not a tough find. Naturally, the role it gets is that of a replacement for other symbols.

As I mentioned previously, you form wins by having clusters of matching symbols form. Whenever this happens, a portion of the locked region is unveiled, and once you remove all pieces, you get access to one of the two versions of the free spins.

Muspell Spins will have only the high value symbols present, along with a Lava feature which destroys symbols and adds a single type, including wilds.

Valhalla Spins uses only Golden Shields on the reels, along with empty positions. These shields get locked and then reveal multipliers for the total stake.

As for random features, there are several of those as well. Lightning is the one which removes low value icons and turns others into wilds or a single type of regular symbol. From Hammer, you can get nudges or symbol removal, which then gets you wins.

Maximum Payouts

Considering the game’s design, which hints at big wins and huge clusters, you might be disappointed at the 1,800x jackpot that can be won here. With the highest wager selected, you could get a payout of $72,000 at most.

We have the RTP for this game as well, and it’s set to 96.08%, a percentage that I find acceptable. What this number tells us, is that over the slot’s entire life (not your own sessions), it will pay back 96.08% of the amount invested in it by players. The house edge is 3.92%.


Thor’s Lightning has awesome features, and some OK potential, but it could’ve been so much more interesting if it would pay a large jackpot, rather than the 1800x it has available.

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