San Quentin Slot Review

Expert Rating: 5 out of 5
Review by Chris Taylor
Last update 26th May 2022
Review by Chris Taylor
Last update 26th May 2022

Based on infamous prison, the San Quentin slot is by Nolimit City. With 5 reels and 243 ways to win, this extremely volatile game uses the xWays mechanic. There are Enhancer Cells which can reveal Razor Split symbols which gives you more symbols and ways to win, up to 13,189,257,216. With Split Wilds for more ways to win, it’s all about the Lockdown Spins feature. With free spins and a multiplier randomly chosen, there are Jumping Wilds that come with a multiplier that doubles up to 512x if they land on reels with Razor Split symbols. This lead to 150,000 x stake max wins per free spin. Head behind bars in our detailed San Quentin review.

San Quentin Max Win
150,000 x bet
Nolimit City
Type of Slot
Video Slot
Stakes Range
20p to £32
Bonus Features
Free Spins/Multiplier
Max Win
150,000 x
Very High

San Quentin Demo

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San Quentin Slot RTP, Details and Wager Limits

Reels/Paylines: 5 reels + 243 ways to win

Stakes Range: 20p to £32 per spin

RTP: 96.03%

Max Win: 150,000 x bet per spin

The San Quentin slot is played on 5 reels, 3 rows and 243 ways to win. A winning combination comprises of landing 3, 4 or 5 of the same symbol from left to right on adjacent reels (i.e. on reels 1, 2 and 3 in any position).

You can spin away in this prison inspired game from 20p to £32 per spin. There’s an Autoplay function where up to 100 autospins can be chosen. There are single win and balance limits too.

The San Quentin RTP is 96.03% which is slightly above the 96% slots average. 58.74% of the RTP comes from the base game whilst the bonus features provide 37.29%. Variance wise, this is considered extreme and rates as 10/10 by creator Nolimit City.

With a hit frequency of 34.25%, over a third of spins will result in a winning outcome. Now, the max win is 150,000 x your total stake per spin. Yes, you read that right. This can be won with the potential 512x multiplier in the free spins.

Theme – head to the maximum-security prison

Theme: Prison

High Value Symbol: Beefy Dick

Compatibility: Mobile, Tablet, Desktop


The San Quentin slot is based on the oldest prison in California, the San Quentin State Prison, which is the state’s only death row for male inmates. It’s arguably 1 of the world’s most famous prisons that featured in films like Get Hard. San Quentin has also hosted concerts and housed many notorious inmates.

With a prison theme, the background are the prison walls which have barb wire along the top. Graphically quite gritty, you’ll notice a Latin style hip hop soundtrack with sounds a little like the Cuban hip hop group Orishas. With clear and high definition visuals, you’ll see security cameras either side of the reel set which adds to the theme.

Symbols on the reels include elements you’ll fill within prison including toilet rolls, handcuffs, shivs (knife/razor used as a weapon), Zippo lighters and bars of soap. The 5 higher value symbols are represented by convicts. They include Crazy Joe Labrador, Biker Bill, Loco Luis, Heinrich the 3rd and Beefy Dick. There’s also a Split Wild symbol which I will look at in more detail below. Firstly, here’s what each symbol pays:

Symbol(s) Payouts
san-quentin-slot-toilet-roll-symbolToilet Roll 3, 4 or 5 = 0.15, 0.6 or 1.5 x stake
san-quentin-slot-handcuffs-symbolHandcuffs 3, 4 or 5 = 0.15, 0.6 or 1.5 x stake
san-quentin-slot-shiv-symbolShiv 3, 4 or 5 = 0.15, 0.6 or 1.5 x stake
san-quentin-slot-zippo-lighter-symbolZippo Lighter 3, 4 or 5 = 0.2, 0.75 or 2 x stake
san-quentin-slot-soap-symbolSoap 3, 4 or 5 = 0.2, 0.75 or 2 x stake
san-quentin-slot-crazy-joe-labrador-symbolCrazy Joe Labrador 3, 4 or 5 = 0.25, 0.9 or 2.5 x stake
san-quentin-slot-biker-bill-symbolBiker Bill 3, 4 or 5 = 0.3, 1 or 3 x stake
san-quentin-slot-loco-luis-symbolLoco Luis 3, 4 or 5 = 0.35, 1.1 or 3.5 x stake
san-quentin-slot-heinrich-the-3rd-symbolHeinrich the 3rd 3, 4 or 5 = 0.4, 1.25 or 4 x stake
san-quentin-slot-beefy-dick-symbolBeefy Dick 3, 4 or 5 = 0.5, 1.5 or 5 x stake

San Quentin Mobile


Created using HTML5 technology, the San Quentin slot game is available to play on desktop, mobile and tablet devices. The high definition quality of the graphics and animations work well even on smartphone devices.

San Quentin Bonus Features

You’ll find some unusual extras in this archaeological dig, starting with the Sticky Win Respins that expand the reels. They in turn can deliver pyramid wilds which can turn whole reels wild. There’s also a free spins feature with an expanding multiplier.

Enhancer Cells feature

At the top and bottom of each reel, there are locked enhancer cell positions. Landing 1 or 2 bonus symbols will trigger the Enhancer Cells feature. When triggered to open, they may reveal 1 of the top 5 paying symbols, Wild, Razor Split or xWays symbol. Here’s what they do:

  • Razor Split symbol: will split all symbols on regular positions in that reel to double positions. This increases the number of ways to win. If it lands at the top and bottom on the same reel, it will split symbols twice. You can play with up to 13,189,257,216 ways to win if all positions are open.
  • xWays symbol: this will reveal the same regular paying symbols that are stacked 4-high.

Split Wild feature

In the base game, Split Wilds can land on any reel. When it does, the Split Wild feature is activated. The Split Wild then splits all the regular symbols on the same reel except for itself. This gives you more ways to win with up to 46,656 ways to win possible.

Lockdown Spins feature


To play the Lockdown Spins feature, you need to land 3, 4 or 5 prison tower bonus symbols. This will reward you with 1, 2 or 3 starting Jumping Wilds respectively. The Enhancer Cells open when triggering the feature will be in play for all free spins.

Before the Lockdown Spins begin, a number of free spins and a special symbol multiplier will be decided randomly on a convict symbol. Look out for bonus symbols as this will add another Jumping Wild as well as extra free spins.

San Quentin also benefits from a Jumping Wilds feature. Represented by a police badge, the Jumping Wilds symbol jumps to a random position on each free spin. When a Jumping Wild lands on a reel with a Razor Split enhancer, the multiplier is doubled. The maximum multiplier can reach up to 512x.

Nolimit Bonus feature

Like with other Nolimit City slots, there’s a Nolimit Bonus feature. This allows you to buy your way into the Lockdown Spins feature. You can enter it with 3, 4 or 5 bonus symbols and a different RTP for each option:

3 Bonus symbols 100 x stake 96.26% RTP
4 Bonus symbols 400 x stake 96.26% RTP
5 Bonus symbols 2,000 x stake 96.95% RTP

This feature isn’t available to UK players though due to regulations from the UK Gambling Commission.

San Quentin Review Summary – 150,000 x bet max wins

Theme & Symbols

Sounds & Music

Bonus Features

RTP (96.09%)

Max Win (150,000 x)


The San Quentin slot isn’t for the faint-hearted, much like the prison. Nolimit City are known for pushing the boundaries with their slot games but this release is proof they are willing to push things a lot further.

Extremely volatile, San Quentin will appeal to those who chase that huge win. From the documents provided, it takes approximately 974 spins to win 100 x your total stake or more and will require 230 spins on average to activate the Lockdown Spins feature. It has a Dead or Alive 2 feel to it when it comes to payouts.

The key to winning big is from the Jumping Wild multiplier which can reach 512x in the free spins. Coupled with triggering the feature with 5 bonus symbols and a high number of open Enhancer Cells, this is where the potential 150,000 x stake wins will surely come from.

Theoretically, you can hit the max win when trigger the Lockdown Spins feature with 3 bonus symbols but it’s more like when triggering with 4 or 5. Saying that, it will take 1.8 million spins on average to win the max payout.

However, San Quentin is as brutal as the prison though and is as high variance as they come. Nolimit City has created a superb looking game with a theme that is sure to cause offence and controversy. In terms of the gameplay, this is for big win chasers and to be treated with respect.

Are you ready to sharpen your shivs and join convicted felons on a quest for huge payouts? Just make sure you don’t drop the soap. If you like the xWays mechanic used here, Punk Rocker also uses it.

San Quentin certainly turned heads with huge wins but Nolimit City has gone bigger and bolder in Tombstone RIP. Offering 300,000 x bet max wins, it’s even more brutal in every sense.

  • Unique theme + concept
  • Huge max wins
  • Lots of bonus features
  • No bonus buy element in the UK

San Quentin FAQs

What is the San Quentin RTP?

The San Quentin RTP rate is 96.03%. An average RTP rate, 58.74% of it comes with the base game with 37.29% coming from the features. If you buy the feature, the RTP can go up to 96.95%.

What is the San Quentin max win?

The maximum win is 150,000 x your total stake per spin. Known as the Psycho Manhunt, this will come in the Lockdown Spins feature with potential 512x multipliers.

Are there any San Quentin free spins?

Yes, the Lockdown Spins feature will begin with 1, 2 or 3 Jumping Wilds (for 3, 4 or 5 Bonus symbols). With a random number of free spins and multiplier, there are Jumping Wilds which have multipliers attached with can double up to 512x.

How does the Enhancer Cells feature work?

You will see locked enhancer cell positions. 1 or 2 bonus symbols trigger the Enhancer Cells feature. Revealing a high value symbol, it can also reveal a Razor Split symbol for more ways to win up to 13,189,257,216. The xWays symbol reveal the same symbol that is stacked 4-high.

Other High Payout Slots

Seeing that San Quentin can pay up to 150,000 x your total stake per spin, here are 4 slots that also offer high payouts per spin: