City Of Sin

City Of Sin Slot Review

A private investigator and a femme fatale, circling each other in an old-school city that runs on secrets. City Of Sin commits to that noir setup completely, with cartoon-sharp artwork drained almost to greyscale and colour held back for the reel set.

Something sinister keeps building in the soundtrack underneath it all. Degen Studios run the game on a 5×4 grid with 20 fixed paylines, an RTP of 96.30% and high volatility.

The ceiling is 15,000x your stake, which is competitive for a game this volatile. High-variance maths is the studio’s usual beat, as anyone who’s spun Hades Hellfire will know.

Stakes run from 0.10 to 500 a spin, and City Of Sin joins Plague City in the catalogue. Expanding wilds paired with a per-spin multiplier is familiar machinery, but this one wears the trench coat well.

Base Game & Features

The reels sit five wide and four deep, and the cast does the heavy lifting on the paytable. The Private Investigator and the Femme Fatale head the symbol set, with the SIN symbol and the Scatter handling everything that isn’t a straight line win.

Paylines

There are 20 fixed paylines in play on every spin. The count doesn’t change and there’s nothing to configure, so the stake is the only lever you’re pulling.

Random Multiplier

Before the reels come to a stop, the game draws a random multiplier between x1 and x200. Every winning combination on that spin is multiplied by whatever value was drawn.

Sin Symbol Battle

A SIN symbol landing with winning potential sets off a battle between the Private Investigator and the Femme Fatale. The result reveals one side or the other as a stack across the reels: either stacked Private Investigator Wilds or stacked Femme Fatale symbols. Wins are evaluated after the expansion.

More than one SIN symbol can land on the same spin.

Once a SIN character has expanded fully as a wild, any matching character pay symbols already on the grid expand to fill their own reels too. If the Femme Fatale expands as a wild and there are Femme Fatale pay symbols sitting elsewhere, those expand as well.

City Of Sin Free Spins

Scatter symbols open one of three Free Spins modes, and the number that land decides which one you get. All three award 10 Free Spins.

• Enter the Den (three Scatters): 10 Free Spins with increased SIN symbol frequency and random multipliers running from x5 to x200.
• Underground Deal (four Scatters): 10 Free Spins with more SIN symbols on the reels and random multipliers running from x10 to x500.
• Deadly Desire (five Scatters): 10 Free Spins with more SIN symbols than any other mode. Every SIN symbol reveals the same winning side, and each one moves the drawn multiplier up a step before wins are evaluated.

Inside Deadly Desire, an expanding SIN symbol also expands any matching 1×1 Private Investigator Wild or Femme Fatale symbols to fill their reels.

Retriggers

Scatters keep working once the bonus is running. Two Scatters during Free Spins add two more spins, and three Scatters add four.

Free Spins Gamble

Before Enter the Den or Underground Deal begins, you get one gamble. It can land on five, eight or 12 Free Spins, or upgrade the mode by a level: Enter the Den becomes Underground Deal, and Underground Deal becomes Deadly Desire.

A losing gamble cuts the number of spins awarded. It doesn’t take the bonus away.

Bonus Buy & Ante Bets

Two of the three Free Spins modes can be bought outright, and two ante bet options sit alongside them for anyone who’d rather nudge the odds than pay the full fare.

• Enter the Den: 75x bet, with more SIN symbols and multipliers from 5x to 200x.
• Underground Deal: 160x bet, with enhanced SIN symbol action and multipliers from 10x to 500x.
• Bonus Boost (ante bet): 3x bet, increasing the Free Spins trigger chance by over 5.5x.
• Desired Spins (ante bet): 25x bet, with synced SIN symbols each spin and expansion of matching normal symbols.

Deadly Desire isn’t on the menu. Five Scatters is the only way in.

Our Honest Verdict

Overall Rating: 7.2/10

The base game is where the pre-spin multiplier shows its limits. It sits on x1 and x2 far more often than anything with two digits, and you stop watching the number until a win actually connects. Seeing a big one flash up and catching nothing on the reels grates.

The SIN battles resolve quickly and without much ceremony, so they land as a mechanic rather than a moment.

Enter the Den and Underground Deal play almost identically, separated mainly by where the multiplier ceiling sits, and whether the step up justifies the extra outlay is down to taste. The Gamble is the smartest thing here: a loss costs spins, never the bonus.

Deadly Desire stayed out of reach for us, and not being able to buy it gives it real prestige. The 15,000x ceiling is competitive for something this volatile, and you can see the route to it.

Anyone who plays for atmosphere will get a lot from this. Anyone hunting a mechanic they haven’t seen before should walk on by. There’s no original sin here, but the crime is committed with real style.

City Of Sin FAQs

• What is the RTP of City Of Sin?

  City Of Sin has an RTP of 96.30%, which sits around the industry average of 96%. It’s paired with high volatility, so returns arrive in fewer, larger chunks rather than steadily.
• What is the maximum win in City Of Sin?

  The maximum win is 15,000x your stake. Getting there relies on a high random multiplier landing on the same spin as multiple Sin Symbol expansions.
• How volatile is City Of Sin?

  City Of Sin is a high volatility slot. Degen Studios build in that space as a rule, and this release is no exception.
• How do you trigger the free spins in City Of Sin?

  Scatter symbols open one of three modes, all awarding 10 Free Spins. Three Scatters trigger Enter the Den, four trigger Underground Deal, and five trigger Deadly Desire. Two or three Scatters landing during the bonus add two or four extra spins.
• Can you buy the bonus in City Of Sin?

  Enter the Den can be bought for 75x your bet and Underground Deal for 160x. Deadly Desire cannot be purchased at any price and has to be triggered with five Scatters. Two ante bets are also available: Bonus Boost at 3x bet and Desired Spins at 25x bet.
• How does the Sin Symbol Battle work?

  A SIN symbol landing with winning potential triggers a battle between the Private Investigator and the Femme Fatale. The winner is revealed as a stack across the reels, and wins are evaluated afterwards. Once a SIN character expands fully as a wild, any matching character pay symbols on the grid expand to fill their reels as well.
• What is the bet range in City Of Sin?

  Stakes run from 0.10 up to 500 per spin, covering low-stakes play and high rollers on the same 20 fixed paylines.
• When is City Of Sin’s release date?

  City Of Sin’s release date is 27 August 2026. The game is developed by Degen Studios.