Introduction to Happy Prison
Happy Prison is a casino slot from TrueLab featuring our favorite fairytale creatures fighting for freedom. Welcome to the prison courtyard to meet a unicorn hitting max reps on the bench press while popping steroids, or our friend Toad from Super Mario, locked up, but looking extremely under the influence. And it gets worse, because during the prison riot in the Bonus Game, some of our favorite creatures won’t make it, which ones? Try the Happy Prison demo at the top of the page and find out. As you may notice, TrueLab presents a game that blends a cartoonish vibe with dark humour, throwing familiar fairytale creatures into grim prison conditions. The vibe might not suit everyone, but its cheeky tone made us smile. In terms of gameplay, it offers familiar features such as Wild Multipliers, Free Spins, and a symbol-removal mechanic during the Bonus Game. It’s hardly a groundbreaking release due to familiar gameplay, but its dark, humorous vibe makes it worth a spin. Let’s help the unicorn in the upcoming riot and explore the game stats.

Theme, Gameplay, & Payouts
Happy Prison is a video slot by TrueLab that features 6 reels, 4 rows, and 4,096 ways to win. You can select bet sizes ranging from 0.1 to 20, with a default RTP of 96.07%. This game has high volatility and offers potential wins of up to 10,000X your bet.
The game’s design is based on a cartoonish prison theme, blending a blissful vibe with gory visuals. The 6x4 game grid is in the prison courtyard on a sunny day, showing the unicorn bench-pressing, possibly training for an upcoming riot. Above the reels, you’ll see the Removal Meter, which is activated during the Base Game. If you want to boost the gaming experience for a cost, activate the Feature Buy button in the right corner. All other buttons, including the Spin and Bet Size, can be found below the reels. You can play Happy Prison on all mobile devices, desktops, and notepads. You create a winning combination by landing 3 or more of the same symbol types on adjacent reels starting at the leftmost reel.
The lower-paying symbols are soap, toilet paper, dice, lighter, phone, and cigarettes. Landing 6 of the same symbol type pays between 1X and 1.5X. The higher-paying symbols are a pig, a raccoon, a giraffe, a rhino, and a bunny. Landing 6 of the same symbol type pays between 2X and 7X.
The game’s Wild Symbol has the design of a “W” and can land with a multiplier value of 2X or 3X. The Scatter Symbol has the word “Bonus” and landing 3 or more will trigger the Bonus Game. During the Free Spins, the Super Scatter can appear, removing 1 lower-paying symbol when it lands, and 4 Super Scatter upgrades the Bonus Game. Let’s find out what kind of features this game has to offer.
Special Features & Slot Mechanics
What is the max win in the slot of Happy Prison?
The max win is 10,000X the bet.
What features are available in the slot of Happy Prison?
The features of this slot game are Wild Symbol, Free Spins, and Feature Buy.

Wild Symbol
The Wild Symbol substitutes all symbols except the Scatter and Super Scatter Symbols and helps you create winning combinations.
The Wild Symbol can land with multiplier values of 2X and 3X during the Free Spins. It can only land on reels 2, 3, 4, 5, and 6. The multiplier value will apply to all wins it’s part of. If several Wild Multipliers are part of the same win, their values will be multiplied before being applied to the win.
Free Spins
This feature can be triggered by landing 3 or more Scatter Symbols anywhere on the reels during the Base Game. Depending on whether you land 3, 4, 5, or 6 Scatter Symbols, you will be awarded 10, 12, 14, or 16 Free Spins, respectively. You can retrigger the feature by landing a Scatter Symbol, granting +1 additional Free Spin.
During the feature, the Wild Multiplier can land on the reels with values of 2X and 3X. The Super Scatter can also land during the Free Spins. Each Super Scatter removes 1 lower-paying symbol type until the feature ends. Landing 4 Super Scatter Symbols at once will upgrade the Bonus Game, removing 4 lower-paying symbol types from the reels.
Feature Buy
If you want to boost the gaming experience for a cost, use the Feature Buy options:
Bonus Bet = Activate the Bonus Bet for an extra cost of 30% of the current bet. This will double your chance of triggering the Bonus Game. Played with an RTP of 96.15%.
100X = Activate the Bonus Game with 10 or more Free Spins. Played with an RTP of 96.19%.
200X = Activate the Bonus Game with 10 or more Free Spins, and one guaranteed Super Scatter. Played with an RTP of 95.86%.
500X = Activate the Bonus Game with 10 or more Free Spins, and three guaranteed Super Scatters. Played with an RTP of 96.05%.
Final Thoughts on Happy Prison
“In prison, every day is a battle against the walls, the routine, and yourself.” We’ve seen the prison theme in many slot releases, such as the San Quentin series by Nolimit City and Hellcatraz from Relax Gaming. Here, we get an unusual prison experience from TrueLab, blending cartoonish charm with a grim prison vibe. Although it may seem like a fun take on a familiar theme, we soon realize its dark side, as a gruesome prison riot unfolds during the Bonus Game. We realize the dark humor isn’t for everyone, but we enjoyed the storytelling, which continues the provocative trend the slot industry has seen lately.
In terms of gameplay, it doesn’t match the design in ambition and innovation. Here, we are presented with a modest Base Game, with the Wild Symbol as the only feature. Just as in the story, the action happens during the Free Spins, where the multiplicative Wild Multiplier makes an entrance with values up to 3X. TrueLab has also thrown in a removal symbol mechanic, where lower-paying symbols get removed by landing a Super Scatter Symbol. We were occupied studying the grim design during the Bonus Game, which speaks volumes about the modest win potential it offers. We’ve seen the Wild Multipliers and symbol removal countless times before, and we need an additional feature to elevate the Free Spins.
In conclusion, we appreciated the darkly comic prison theme, offering an ambitious storyline of fairytale animals caught in a riot, fighting for freedom. The gameplay takes a safer approach, providing familiar features with decent win potential. Although the design boosts the rating, the gameplay isn’t enough for a high score.
Happy Prison is a charming yet gory release that offers dark humour and familiar gameplay.



