Underworld Slot Review 2024
Vienne GarciaUnderworld Facts | |
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| $500 BonusPlay at Stake | |
| Reels: | 5 |
|---|---|
| Rows: | 6 |
| Paylines: | Scatter Pays |
| Min. Bet: | $0.10 |
| Max. Bet: | $1,000 |
| Max. Win: | 20,000x |
| RTP: | 96.34% |
| Free Spins: | |
| Bonus Buy: | |
| Free Play: | |
Underworld pulls you straight into the depths of a fiery hellscape guarded by Hades.
This slot's dark, intense theme sets the tone from the start, with slick animations and a savage vibe that pulls no punches.
A creation from Titan Gaming and exclusively available at Stake Casino, Underworld offers a brutal gaming experience like no other. It's got a pay-anywhere mechanic where 8 matching symbols trigger wins, plus global multipliers that can boost your payouts fast. But the real showstopper? The insane Bonus Buy Battle, where you go head-to-head for a shot at massive rewards or risk losing it all.
In this Underworld slot review, we're covering all the key details-from payouts and betting limits to the rules and the unique Bonus Buy Battle features that make this game stand out. Whether you're looking to explore the depths of hell with low stakes or go big with high roller bets, we will walk you through everything these reels have to offer.
Key features
- 5 reels, 6 rows
- Pay Anywhere Mechanic
- Tumble Wins Feature
- Multipliers up to 500x
- Bonus Buy Battle feature
- Max win in base game: 10,000x bet size
- Max win in Battle: 20,000x
*We've found Underworld pretty accessible in most locations, but if need be, try using a VPN service if you're encountering geo-restrictions at Stake.
Where to Play the Underworld slot - Best Site to Play
Looking to venture into the fiery depths of Underworld slot? You'll only find this scorching hot game from Titan Gaming and Twist exclusively at Stake Casino. That's right-no other online casino carries it right now. The two gaming studios are developing exclusively for Stake. At least for now.
And that's all cool. Stake is an inferno of awesomeness. They've got flexible betting limits with great high roller options, fast crypto payments, and just about everything you need to face the flames of Hades and score some treasures from the underworld. Not to mention the casino has one of the most amazing game portfolios online, making it an all round favorite with gamblers.
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Underworld Bonus Buy Battle slot – Reels of Hell
The Underworld slot throws you into a hellscape with a modern twist. Picture a 5×6 grid where cold and fire collide, creating an eerie yet electrifying vibe. No cutesy fluff here-this is straight-up intense, unlike some other titles from the Twist Gaming team. But it's still got that same slick animation and smooth gameplay that you'd expect from this first class developer.
Hades, the god of the dead, looms like a beast right next to the game screen. Embodying the devil himself, he is a monstrous character with three beastly heads. And yeah, technically, the three-headed dog is Cerebus who guards Hades in Greek mythology-but who's counting?
The flames flicker, the ice bites, and the whole setup screams high-energy chaos. It's the perfect mix of eerie and thrilling, with a wild ride through the depths of the online gambling.
Play Underworld for Free
We're big fans of free play ourselves. Even though you can't win real money, free play is still awesome for getting the full game experience.
And with a slot like Underworld, you can use the demo bankroll to dive straight into all the game's bonus features - including the Bonus Buy Battle – and see what really makes it tick. All without having to drop a cent.
It's the perfect way to try out the big highlights and to see the action unfold faster. Plus, you get a feel for the game mechanics, so when you're ready to play for real, you'll know exactly what to expect.
And at Stake, it's easy to play Underworld for free. No deposit needed. As all gamblers know, it's good to explore the depths before you decide to wager real cash. It's like a free pass to Hades, minus the risk of flames.
How to Play Underworld Bonus Buy Battle Slot
It's really quite simple and intuitive, but for those who are completely new to online slots, we put together the step by step instructions below on how to play Underworld:
- To kick things off, select your desired bet amount by tapping the + and - buttons located near the Spin button. You can choose bets ranging from a mere $0.10 to $1,000 per spin, making it easy to accommodate various betting preferences.
- Then, decide if you want to go for the Bonus Buy Battle or other options to fast track into special features. Keep in mind that these options come with different price tags in addition to your base bet. We'll explore these in the Special Features section.
- When you're all set, hit the Spin button. If you get 8 or more of a symbol, you'll be paid according to the value of that symbol. The more matching symbols you have, the higher the payout. Winnings are automatically credited to your balance.
The lightning button next to Spin activates turbo spin, making the reels spin faster for a more thrilling experience.
For a more relaxed session, try the Auto Spin feature, which allows the game to spin automatically for up to 1,000 spins. You can also use the Stop limits to specify the parameters for when you want to take over the gameplay – this will let you maintain control while using this feature.
Underworld Paytable
| Symbol | Minimum payout | Maximum payout |
|---|---|---|
 | X10 | X50 |
 | X2.5 | X25 |
 | X2 | X15 |
 | X1.5 | X12 |
 | X1 | X10 |
 | X0.8 | X8 |
 | X0.5 | X5 |
 | X0.4 | X4 |
 | X0.3 | X2 |
To start racking up prizes, all you need is 8 matching symbols, anywhere on the grid. No need to worry about paylines-just hit 8 of a kind, and you're in.
The three-headed dog is the highest-paying symbol in Underworld, dishing out up to 50x bet size for your pay day. Behind it, you've got other symbols like the boat to Hades and the lyre. Lower-paying symbols are jars of mysterious potions-don't ignore them though! They might not seem like much at first, but they show up more often and can add up quickly for solid wins.
Underworld Slot Bonus Features
The Bonus Buy Battle is what really sets the Underworld slot apart, but there's also a ton of other wicked features built in to keep your pulse racing. From free spins, to multipliers, to even more multipliers, this game's got all the dark magic you need to boost your wins and light up the underworld. We outline them all below.
Multipliers
There are 4 tiers of Multipliers in Underworld:
- Blue: 2x, 3x, 4x, 5x, 6x, and 8x
- Green: 10x, 12x, 15x, 20x, and 25x
- Purple: 50x
- Red: 100x, 250x. 500x
You can get multipliers just like that, or they can be spawned by Hades. Either way, they are applied at the end of a tumble win.
Hades Symbol
Hades ain't just standing there being pretty boy on the side of the screen. His energy can also transform and activate 3 special features.
- Symbol Upgrade (Blue): When the orbs in Hades' hands go blue, low value symbols on the reels will transform into higher value ones.
- Multipliers (Green): When the orbs go green, random multipliers from 2x up to 500x will start landing on the reels.
- Double Multipliers (Red): And when red, you get double the random multipliers.
Free Spins Bonus Round
If you spin a minimum of 4 Scatter symbols, you will unlock a bonus round of 15 free spins.
Global Multiplier
The bonus game has a global multiplier next to the game grid. You can improve it by spinning more multipliers on the reels, and they will be added together.
However, this global multiplier is only applied at the end of a tumble win.
Bonus Buy Battle Feature
The Bonus Buy Battle in Underworld is a definite highlight and very much unlike what you might see in other online slot games. The only way to enter this game is through a fee of 100x your bet size.
Once unlocked, you essentially enter into a slot battle with "Billy the Bully" and the winner takes all. You'll get first pick between two game screens; Billy will get the other. The two games will spin, and your total winnings for that round needs to top Billy's in order for you to win. You then pocket Billy's win as well.
If Billy's total win is higher than yours however, then all your winnings would go to him. In other words, it's an all or nothing battle.
What's really cool is that max win in the Bonus Buy Battle doubles to 20,000x your bet size. Literally twice as much as usual.
Buy Feature
- Bonus Boost: If you're just hoping to speed up your entry into the bonus round in Underworld, there is also a Bonus Boost option at a more modest price of 1.2x your bet size. It will double your chances of spinning 4 Scatters to enter the bonus round. Do remember though there is no saying when it will unlock, and the cost is 1.2x on your base bet on every spin until you decide to reset it.
- Bonus: If you have the budget to put down a bit more upfront, then you can really just buy your way in for 100x your bet. You'll unlock 15 free spins where you can work on building that global multiplier to pump up your win.
Streamers play Underworld
ClassyBeef has been laying it on thick with the Stake exclusive slots, and Underworld is no exception. The crew got in on this one early and managed to score big with a $553, 260 win in the Bonus Buy Battle, with a base bet of $100. That's a pretty lucrative gamble.
A slightly lesser known streamer by the name of Brian of Denver also gave these reels a shot in the Bonus Buy Battle. While he did beat Billy the Bully, his win was "only" $238 SC, with a bet size was $2 SC. Still juicy, but not nearly as impressive. But at least there's absolutely no question that it's real and not fake gambling with a bet that size.
Video: ClassyBeef – Biggest Wins on 'Underworld'
Underworld Betting Limits
Whether you're playing it safe or going big, Underworld gives you what you're looking for. You can drop as little as $0.10 per spin if you're just feeling things out, or crank it up to $1,000 per spin if you're ready to throw down.
With these betting limits, you can test out those epic bonus buys and battles without breaking the bank. Or, if you're a high-roller, push the limits and chase those massive wins. Flex that budget and see where the underworld takes you.
Play Underworld Slot on Mobile
The Underworld mobile slot is just as brutal as on desktop. No apps to download, no hassle-just hit up Stake Casino on your phone or tablet and dive right in. It's all HTML5, optimized for both Android and iOS, and the game runs smooth no matter where you're playing. With touch controls, all it takes is a tap to spin those reels. No need to stay glued to your computer-get the full hell-raising experience right in your pocket, anywhere, anytime.
Underworld Slot FAQ
- What is the jackpot prize in Underworld?
- How do I unlock the Bonus Battle in Underworld?
- How does the Pay Anywhere mechanic work?
- Do I have to register to play the Underworld in demo mode?
- What is the RTP for Underworld?
- Which is the better - Bonus Buy or Bonus Buy Battle in Underworld?
1.) What is the jackpot prize in Underworld?
Underworld is not a progressive jackpot game, so there is technically no jackpot per se. However, if by jackpot you mean the top prize, then it's 10,000x your bet size. If you take the max bet of $1,000 that's up to a hefty $10 million payout. Because the Bonus Buy battle can give you both you and Billy the Bully's winnings, the max payout when playing this feature is doubled to 20,000x bet size.
Back to FAQ2.) How do I unlock the Bonus Battle in Underworld?
The Bonus Buy Battle feature in Underworld can be accessed through a fee of 100x your base bet. For example, if your bet size is $1, a one time fee of $100 will unlock the Bonus Buy Battle. Note that unlike many other bonus games, the Bonus Buy Battle cannot be unlocked through triggering Scatters in the slot's base game - the only way to access it is through an outright purchase.
Back to FAQ3.) How does the Pay Anywhere mechanic work?
Unlike traditional slot machines that use paylines, Underworld uses a Pay Anywhere (Scatter Pays) mechanic. With the Pay Anywhere mechanic, you win when you have a minimum number of the same symbol. In the case of Underworld, the minimum number is 8. The symbols don't have to touch each other and they can be anywhere on the grid - hence the name, "Pay Anywhere"!
Back to FAQ4.) Do I have to register to play the Underworld in demo mode?
Rules have been getting tighter to prevent underaged gambling, and you will need to sign up for an account at Stake to play Underworld in demo mode. This applies to all other software based casino games on the site too. Although it is an extra step, the sign up at Stake is a pretty quick process with just basic info requested and you don't have to make a deposit.
Back to FAQ5.) What is the RTP for Underworld?
The Underworld slot has an RTP of 96.34%. It is in line with the industry standard for online slots today, although it is a touch lower than several Stake exclusives like the 97% RTP in Festive Frost slot, a game from Carrot Gaming. Or Sugar Twist at 98%, an Enhanced RTP game that is a an exclusive collaboration between Pragmatic Play and Stake.
Don't lose too much sleep over the RTP though. Standing for Return to Player, the RTP is a statistic regarding overall payouts in the long run in the big picture of the casino's operations, rather than what an individual might see in a few spins.
Back to FAQ6.) Which is the better - Bonus Buy or Bonus Buy Battle in Underworld?
Both the Bonus Buy and Bonus Buy Battle cost a hefty 100x your bet, and if you're rolling in the cash, which one should you choose?
In short, the Bonus Buy is the safe bet-you're building that global multiplier and stacking up the wins. What about the Bonus Battle? That's pure adrenaline. You're throwing down with Billy the Bully, and it's all or nothing. You could walk away with 20,000x your bet, or you might leave empty-handed. Double the potential payout compared to the Buy, but way more risk in not making an above 100x win to clear a profit. But let's be real, though-if you're in this deep, are you really worried about losing your entry fee?
Back to FAQUnderworld Slot in a Nutshell
Underworld is a high-octane slot that throws you deep into a fiery, hellish landscape with a modern 5×6 grid layout. It's easy to play with its pay anywhere mechanic.
And the multipliers and Bonus Battle can really turn up the chaos. Whether you're after quick thrills or going for high-risk, high-reward action, Underworld delivers a hell of a good time.
I've been working in the online casino landscape in Malta for more than 10 years and have seen how the industry works from customer service roles to the backend of the business. While I am lucky enough to call myself a native on the sunny island called Malta, I also enjoy travelling and have travelled across Canada! After wandering through the great white north, I have decided to share my knowledge and now work with Canadian players to compile accurate casino reviews to help players navigate through the hundreds of gaming sites online.