Introduction to Bangkok Hilton

Bangkok Hilton is a casino slot from Nolimit City, where you'll get to experience the atrocities of one of the world's most hardcore correctional facilities. Its name may not sound like such an ordeal at first, but you'll quickly find out that, like many bits crammed into the studio's productions, it's one big joke. The establishment is based on Bang Kwang Central Prison in Thailand, serving as men's death row and execution chamber, but, given that all inmates in the game appear to be women, it seems like the creators were more inspired by the TV miniseries under the same title about a woman who ended up in a Thai prison for smuggling heroin. Whatever the source of the ideas, this place does only a couple of things to inmates - it chews them up and spits them out, and not through the front gate toward freedom. The other way...

To survive in all that filth and hostility, you'll need to keep your wits about and make good use of the game's features, including the iconic Enhancer Cells packed with a range of helpful mechanics. Depending on your behavior, you may also land in Isolation Spins with sticky xWays symbols or Execution Spins, with all Enhancer cells unlocked at all times. If the parole committee looks at you favorably, you might end up enjoying freedom with a solid bundle worth 44,444x the bet to help you start a new life.

It's almost impossible to prepare oneself for the unforgiving reality of a Thai prison, but in the case of Bangkok Hilton, you may check out its feature line-up without any risk in the demo mode at the top of this page.

Base Game view of a 6-reel grid with irregular row distribution, on a backdrop of a prison surrounded by chain link fence.
Base Game

Theme, Gameplay & Payouts

Bangkok Hilton is a video slot from Nolimit City with 6 reels, a 2-3-4-4-4-4 row setup, and 152 connected ways to win. You can select multiple stake options starting from a Min.bet of 0.20 up to a Max.bet of 100. The game's default RTP is 96.10%, with several lower variants of 95.13%, 94.14%, and 92.07% also released, so make sure to check the version before playing. The game puts more emphasis on the size of wins rather than their frequency, as the math profile comes with a high (extreme) volatility rating. The maximum win you can land within a single game round is 44,444x the bet. Free spins trigger at an average rate of 1 in 219 spins, while wins exceeding 100x the bet occur with a frequency of 1 in 862 spins.

The first step into the Bangkok Hilton's courtyard is intimidating, but it doesn't yet show the brutal conditions that reign inside the walls. It's as if the game wanted to ease you into the mood and perhaps offer some hope that it won't be as bad as they make it to be. Still, the atmosphere is grim and depressing, with bleak walls surrounding the area and twisted barbed wire ensuring everyone stays in. The situation spirals downward when you progress to Isolation Spins, where ominous writings on the walls will be the proof of people going insane, and Execution Spins, which will place you in front of a bullet-ridden, blood-spattered wall, serving as a canvas for the ultimate punishment. You can experience these gruesome images from the comfort of your home on any desktop or on the go on a mobile device like a smartphone or a tablet.

Symbols in the paytable are divided into two sections, although, regardless of the hierarchy, you'll need at least 3 matching ones landing on active paylines to form a win. Each successful sequence must also begin from the leftmost reel and continue rightward across adjacent columns. The low-value group includes playing card emblems, 10, J, Q, K, and A, stylized into the Thai alphabet, awarding from 0.4x to 1.2x the bet for 6 in a combination. High-paying symbols are represented by five female inmates, each on a different background: grey, blue, red, green, and yellow. These award from 1.6x to 3.2x the bet for a 6-of-a-kind hit. Alongside the regular line-up, there are also Wilds in the form of a golden badge and Bonus symbols appearing as a prisoner's face squeezing through the bars.

Special Features & Slot Mechanics

What is the max win in the slot Bangkok Hilton?

You can win up to 44,444x the bet.

What features are available in the slot Bangkok Hilton?

The features are Enhancer Cells & Bonus Symbols, Isolation Spins, Execution Spins, Nolimit Booster, and Feature Buy.

Execution Spins bonus in progress, showing a high win created from split symbols and Wilds.
Execution Spins

Enhancer Cells & Bonus Symbols

Four Enhancer Cells sit on top of reels 3, 4, 5, and 6. Whenever a Bonus Symbol lands, it will transform into a Wild and open a corresponding Enhancer Cell. If 2 Bonus Symbols land simultaneously, they will also award a respin while keeping the activated Enhancer Cells open. Additional Bonus Symbols landing will extend the sequence with more respins, although no bonus round can be triggered during this feature. Each open Enhancer Cell will reveal a special symbol on each respin.

xSplit Reel = splits all symbols on the corresponding reel in two.

xSplit Row = drops to a random position on the corresponding reel and splits all symbols on that row in two.

xWays = lands on a random position on the corresponding reel and reveals 2-4 instances of the same symbol. It's sticky between respins, and all xWays present on the grid always display matching symbols.

Doubled Inmate = appears as one of the high-paying inmate symbols and doubles all its instances on the grid.

Sticky Wild = transforms one position on reels 2 through 6 into a Wild, which remains sticky during respins and bonus rounds.

Wild Reel = converts all symbols on the corresponding reel into Wilds.

xSplit feature triggered from an activated Enhancer Cell, dividing all symbols on the bottom row into 2.
Enhancer Cells - xSplit

Isolation Spins

Scoring 3 Bonus Symbols anywhere on the grid in the base game activates 7 Isolation Spins. From the start, the Enhancer Cells above reels on which Bonus Symbols landed will be open. Also, 1-3 sticky xWays symbols will be awarded on those columns. Landing a Bonus Symbol on the reel with a locked Enhancer Cell will enable it and progress the bonus to Execution Spins while awarding 3 additional spins.

Execution Spins

Alternatively, 10 Execution Spins will be awarded for landing 4 Bonus Symbols simultaneously during a base game spin. Throughout this round, all Enhancer Cells are unlocked, and 1-4 sticky xWays symbols are added on their columns. In both bonus variants, landing a Bonus symbol on a reel with an enabled Enhancer Cell awards 1 additional spin.

Nolimit Booster

To enhance your base game spins, you can use several options available in the Nolimit Booster menu.

2.5x = xBoost1, with a guaranteed Bonus Symbol on reel 3 or 4.

20x = xBoost2, with guaranteed Bonus Symbols on either reels 3 or 4, or 5 or 6.

30x = Unbarred Spin, with all Enhancer Cells unlocked and any Bonus symbol landing awarding an additional spin.

Isolation Spins bonus in progress, showing a high win created on a high-paying symbol with splits and Wilds.
Isolation Spins

Feature Buy

If you want to skip the base game grind, you also have the possibility of triggering the bonus round instantly.

80x = Isolation Spins.

300x = Execution Spins.

190x = Lucky Draw with a 50% chance for either bonus.

Final Thoughts on Bangkok Hilton

If you follow Nolimit City's roadmap, you know that the studio is no stranger to the subject of incarceration and capital punishment. In fact, the creators seem to embrace it to the fullest, as seen in productions like Folsom Prison and Dead Men Walking, charging the themes with extreme levels of disheartening atmosphere. However, sometimes, there's also dark humor woven into those dreary vibes, like in San Quentin xWays and its powerful sequel. Bangkok Hilton belongs to the former category, enveloping its setting with feelings of hopelessness and depression, warning us in a way what could happen if you venture to the opposite side of the law. Interestingly, this time it's also an all-female inmate cast, but that doesn't make the theme any less intense, so don't expect lighthearted and sometimes humorous conflicts like the ones depicted in the Orange Is the New Black TV series. Bangkok Hilton has no regard for gender, denying all criminals the comforts of a law-abiding citizen, and the audiovisual package captures that attitude exceptionally well.

The ins and outs of the mechanical setup also bring the aforementioned productions to mind, especially considering the leading role of Enhancer Cells equipped with features like xSplit, xWays, and Sticky Wilds. Activating them with Bonus Symbols that transform into Wilds and keeping them open throughout the bonus rounds is what we've seen several times before. Obviously, that doesn't diminish the potency and the attractiveness of the config, as so many modifiers possible to trigger during any base game spin, provide countless opportunities for satisfying outcomes. However, if you were counting on something utterly innovative compared to the existing portfolio, this one may not hit the spot. Altogether, the game holds its ground well, offering a high dose of engagement through multiple familiar features, and teasing with a significant win potential of 44,444x the bet.

Bangkok Hilton is another intense and well-crafted addition to the studio's prison-themed line-up, relying on proven mechanics from previous productions.