UKGC require us to verify your age before letting you play
Bonus-Menu is intended for visitors over the age of 18, including the free games section. To proceed, please register with us to verify your age. If you already have an account, simply log in to verify your age.
We evaluate slot machines based on multiple criteria, from which we make our final verdict.
Design and theme
70 %
Features and playability
75 %
RTP and volatility
96 %
Slot machine details and review Thunder Crown
Thunder Crown is part of Endorphinaβs collection of slot machines with five reels, and itβs one of many to feature a design inspired by the classics. The fruit category would be the best fit for this particular slot from Endorphina, as it has that type of design. Its game area is larger than expected, with 5×5 reels offering a total of 50 paylines.
Every slot machine must be developed by a company that invented, designed and put it into operation. Many players eventually find that they only enjoy playing on machines from specific software provider, so they narrow down their selection by preferred brand.
A slot with medium volatility. Wins occur occasionally and are balanced. The game has an alternating course without extreme fluctuations, suitable for players looking for a compromise between risk and winning potential. More about volatility here.
Slot theme and symbols
The thunder keeps popping off behind the reels, but the game area is all about the Crown and the many fruit symbols that show up on its reels. Its style is an older one, so theyβre going for the look of a classic land-based machine, not something modern. While I wouldnβt call it a good-looking slot machine, that wasnβt the idea anyway. You get 8 regular symbols on its reels, along with several feature symbols.
Thunder Crown theme and symbols
With Medium volatility being advertised, we know that the game strikes a good balance between risk and potential reward. It pays up to 2,400x the stake, which is not a huge amount, but it also carries less risk for the average player, compared to other slots you can play online right now. I should also mention its RTP, at 96.05%, since it tells of a game that, in the long run, will pay enough back to its players.
Red Seven
Grape
Watermelon
Bell
Plum
Orange
Lemon
Cherries
Special Symbols and Slot Features
3D
NO
Autoplay
YES
Free Spins
YES
Gamble Feature
YES
Locking Symbols
NO
Wild Symbol
NO
Win Multiplier
NO
Other features
Expanding Wild
Hold and Win
Other Features
Scatter Symbol
WILD symbol
First on the list of feature symbols, the Crown acts as an expanding wild, so itβs always ready to take over an entire reel, if this results in new combinations forming. The downside is that it can only land on reels 2, 3, and 4. It will also not act as a replacement for tokens or scatter symbols.
Scatter symbol
The Star scatter is a symbol that can land anywhere on the reels, and you benefit as long as there are 3 or more. You get paid 2x to 50x the stake, and the free spins will also trigger then.
Free Spins
Triggered via 3, 4, or 5 scatter symbols, this feature delivers 10, 15, or 20 free spins, respectively. Here, youβre guaranteed 1 or more wild symbols each round.
Thunder Sphere symbol
A Thunder Sphere is a symbol that can land during the bonus game, carrying prizes that range from 1x to 30x.
Lucky Time feature
During paid spins or free spins, you can get Token symbols to appear as overlays, covering other symbols. They release electricity thatβs aimed at the Thunder Crown. Randomly, this can get you the Lucky Time feature, which grants you access to the bonus game.
Thunder Hold Bonus Game
Via the Lucky Time feature, you can trigger the Thunder Hold bonus game. You play in a game area with 5 reels that have 4-5-6-5-4 positions on them. You go through respins and collect Thunder Spheres on the reels, each one carrying a prize. The 3 initial respins reset when you get new Thunder Spheres. Fill a reel with Thunder Spheres, and you claim an additional jackpot: 1,000x Max Jackpot for the 3rd reel, 200x Mid Jackpot for reels 2 and 4, and a 50x Min Jackpot for reels 1 and 5.
Risk Game (Gamble)
The Risk option is optional, and it allows you to gamble the roundβs winnings. You can double that money, or lose it, depending on the outcome (the chosen card has to be higher than the one the dealer gets).
Prize table
Symbol
Multiplier
2x in payline
3x in payline
4x in payline
5x in payline
Scatter symbol
2x
5x
50x
Red Seven
0.20x
2x
20x
200x
Grape
1x
10x
100x
Watermelon
1x
10x
100x
Bell
0.40x
1x
8x
Plum
0.20x
0.60x
2x
Orange
0.20x
0.60x
2x
Lemon
0.20x
0.60x
2x
Cherries
0.20x
0.60x
2x
Our rating of the game
Thunder Crown
Thunder Crown provides the player with a common enough combination of expanding wilds, free spins, and respins that can lead to fixed jackpots. Itβs not a hard-to-find combo in a modern slot machine, and the classic theme doesnβt stand out, either. That being said, this is an accessible slot, with medium volatility, a 2,500x top jackpot, and a 96.05% RTP. Itβs a decent option for most types of players, if you donβt mind how common it can be in most respects.
80%
Editor's rating
Design and theme
75 %
75 %
Features and playability
85 %
85 %
RTP and volatility
96 %
96 %
How do we rate slot machines?
We evaluate slot machines based on multiple criteria, from which we make our final verdict.
Expanding wilds are available on reels 2-4, ready to contribute to all paylines.
Has a free spins feature where youβre guaranteed expanding wilds each round.
The Thunder Hold respin feature, where you want to fill entire reels to get extra prizes.
Itβs a slot with medium volatility, which should make it accessible even to beginners.
Pays up to 2,500x the stake, a healthy enough top prize for that kind of risk profile.
Cons
Has a common theme, with a Crown and plenty of fruit symbols on its reels.
Its design style is more of a retro thing, with dated graphics to mimic the look of older land-based machines.
Its gamble feature has a fairly low RTP of 84% if you take the risk regardless of the dealerβs card.
Manufacturer Endorphina
Endorphina is a Prague-based online casino software developer founded in 2012, known for creating visually stunning and mathematically balanced slot games. π° The company combines classic slot mechanics with innovative features and engaging storylines, appealing to both traditional and modern players. Endorphinaβs portfolio includes popular titles like Book of Vlad, Hell Hot 100, and Chance Machine 40, all designed in HTML5 for seamless play across devices. Licensed and regulated by reputable authorities, Endorphina continues to stand out in the iGaming world for its creativity, reliability, and focus on player experience.
The overall bonus rating is determined based on several factors: the amount of the bonus, the company's rating, the ease of obtaining it, the players' rating and the conditions for obtaining the bonus.
18+. New Players Only. Β£10 minimum deposit. 100% up to a maximum of Β£200. The welcome offer can be activated only once. 30 calendar days to activate. 35x wagering. 60 calendar days from activation to complete wagering. The 100% bonus up to Β£200 will be paid out in 10% increments to your Main Account balance. Bonus balance is not payable. Any remaining bonus balance will be forfeited upon withdrawal. T&Cs Apply. GambleAware.org
The overall bonus rating is determined based on several factors: the amount of the bonus, the company's rating, the ease of obtaining it, the players' rating and the conditions for obtaining the bonus.
18+. New players only. Min dep. Β£20. Valid for 14 days from registration. Welcome Offer: Earn points for cash bets made to unlock wager-free spins on selected games: 2 points for every Β£10 bet on Slots, 1 point for every Β£10 bet on Video Poker and qualifying Side Bets. 0.25 points for every Β£10 bet on Roulette games. Maximum accumulation of redeemable points is limited to 2000. You will receive spins based on the number of points earned:10, 20, 35, 50 points = 5 spins, 70 points = 1 Superspin, 100 points = 10 spins, 200 points = 5 Superspins, 300 points = 4 Superspins, 500 points = 6 Superspins. Additionally you will earn an extra 120 Spins for every 375 points earned above the 500-point threshold, until you reach a total of 2000 points. Spins credited the next day. Spin winnings credited as cash funds and capped at Β£100 per batch of spins. Cash funds are immediately withdrawable. Wager-free spins must be used within 72 hours. Terms Apply. BeGambleAware.org.
Warning: Play and gamble responsibly | Gambling may be addictive 18+ | Underage gambling is an offence | When the fun stops, stop.
I am a writer who specializes in slot machines. I've been writing about them since 2013 and have reviewed thousands of slot machines over the years. I continue to cover the industry and review new releases for Bonusmenu. When I'm off the clock, you'll find me buried in a book or wandering the virtual wastelands of Fallout and the provinces of The Elder Scrolls.
18+. New Players Only. Β£10 minimum deposit. 100% up to a maximum of Β£200. The welcome offer can be activated only once. 30 calendar days to activate. 35x wagering. 60 calendar days from activation to complete wagering. The 100% bonus up to Β£200 will be paid out in 10% increments to your Main Account balance. Bonus balance is not payable. Any remaining bonus balance will be forfeited upon withdrawal. T&Cs Apply. GambleAware.org
18+. New players only. Min dep. Β£20. Valid for 14 days from registration. Welcome Offer: Earn points for cash bets made to unlock wager-free spins on selected games: 2 points for every Β£10 bet on Slots, 1 point for every Β£10 bet on Video Poker and qualifying Side Bets. 0.25 points for every Β£10 bet on Roulette games. Maximum accumulation of redeemable points is limited to 2000. You will receive spins based on the number of points earned:10, 20, 35, 50 points = 5 spins, 70 points = 1 Superspin, 100 points = 10 spins, 200 points = 5 Superspins, 300 points = 4 Superspins, 500 points = 6 Superspins. Additionally you will earn an extra 120 Spins for every 375 points earned above the 500-point threshold, until you reach a total of 2000 points. Spins credited the next day. Spin winnings credited as cash funds and capped at Β£100 per batch of spins. Cash funds are immediately withdrawable. Wager-free spins must be used within 72 hours. Terms Apply. BeGambleAware.org.
Register, verify your age, and play slots for free!
Forgotten Password
UKGC require us to verify your age before letting you play
Cookie Consent
We use cookies on our website (including third party cookies). This helps us to display content correctly, find out what's happening on the site and offer you tailored ads. Check here for more information.
Functional
Always active
The technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user, or for the sole purpose of carrying out the transmission of a communication over an electronic communications network.
Preferences
The technical storage or access is necessary for the legitimate purpose of storing preferences that are not requested by the subscriber or user.
Statistics
The technical storage or access that is used exclusively for statistical purposes.The technical storage or access that is used exclusively for anonymous statistical purposes. Without a subpoena, voluntary compliance on the part of your Internet Service Provider, or additional records from a third party, information stored or retrieved for this purpose alone cannot usually be used to identify you.
Marketing
The technical storage or access is required to create user profiles to send advertising, or to track the user on a website or across several websites for similar marketing purposes.
Software provider
Game typeSlot
Reels
Winning paylines50 paylines
