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Underworld Empire Slot Comparison
 Underworld Empire | Rembrandt Riches | Dr Jekyll & Mr Hyde | Blue Heart | |
|---|---|---|---|---|
User Score | (128) | (4354) | (3850) | (2578) |
Return to Player | 98% | 0% | 95.36% | 96.03% |
Volatility | Low Medium | — | Medium | Medium |
Min Bet | 0.25 | 0.2 | 0.6 | 1 |
Max Bet | 125 | 200 | 150 | 500 |
Max Win | — | — | — | — |
Autoplay | No | No | No | No |
Bonus Buy | No | No | No | No |
Bonus Rounds | No | Yes | Yes | Yes |
Cascading Reels/Avalanche Feature | No | No | No | No |
Number of Paylines | 25 | 20 | 30 | 100 |
| Play Rembrandt Riches for Free | Play Dr Jekyll & Mr Hyde for Free | Play Blue Heart for Free |
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Crime Doesn’t Pay… Usually
The Underworld Empire slot machine is a new slot from iGaming developer KA Gaming, a company founded in 2014 and currently based in Taiwan.
If you’re a fan of classic gangster films, you will love the Underworld Empire online slot. This slot features a cast of dangerous characters, as well as symbols that include revolvers, poker chips and glasses of champagne. These symbols spin across a 5x3 game board and animate as they form winning combos.
Double Symbols, Double Winnings
Your betting options when you play the Underworld Empire slot online range from 0.25 to 125.
Anywhere between three and 10 symbols on a line will score a win. Symbols can land as double symbols, which count twice in a payline. This makes it easier to land winning combos.
Wilds can replace any symbol except for double and scatter symbols.
The slot’s free spins mode is triggered by landing three or more scatters. Before free spins starts, you’ll be asked to spin a wheel. The results of this spin will determine how many free spins you get, either 10, 15, 20, 30 or 40. The wheel also contains double symbols, and whichever you land on will remain in its double form for the duration of the feature.
Details about the volatility and RTP of the Underworld Empire slot machine have not been published.
Symbol
Three on a Payline
Seven on a Payline
10 on a Payline
Gun
0.8x
6x
12x
Cash
0.72x
4.8x
10.4x
Champagne
0.64x
4x
8.8x
Chips
0.56x
3.2x
8x
A
0.48x
3.2x
4.8x
K
0.32x
2.4x
4x
Q
0.32x
2.4x
4x
J
0.2x
2x
3.2x
10
0.2x
2x
3.2x
Looking for more crime-themed slots? We recommend checking out the Mafia Madness slot machine and the Gangster Alley slot machine.
Conclusion
Play Underworld Empire for free here at VegasSlotsOnline! This is a riveting crime-themed slot game with a host of exciting slot features to keep you entertained. The double symbol mechanic is a nice touch, and there are plenty of free spins up for grabs in the bonus round.