Mental

Nolimit City

Mental, developed by Nolimit City, explores the disturbing and sinister setting of an old-fashioned asylum. This highly volatile slot game features innovative mechanics such as the Mental Transform feature, Fire Frames, and Dead Patient multipliers, creating a uniquely unsettling yet engaging player experience.

Rating
Rating
4.3 / 5
Released
Released
31 Aug 2021
RTP
RTP
96.08%
Bet Range
Bet Range
0.20 - 70
Max Win
Max Win
66,666x
Volatility
Volatility
High
Reels
Reels
5x3
Paylines
Paylines
108+
Show more
Play Demo
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Melike
Author
Melike
Sabine
Editor
Sabine
date
Last Updated
21/02/25
time
Read Time
4 mins

Table of contents

Click on a title to jump to a section

Overview of Mental Slot

The game’s 5×3 grid offers 108 starting paylines, expandable through Fire Frames and other features. There are three different bonus games, each with its own unique mechanics and big win potential. Also, you can buy a specific bonus game with the Bonus Buy feature.

Mental 1 screenshot
Mental gameplay 2
Mental gameplay 3
Slot Details

Mental’s massive win potential of 66,666x makes it worth exploring with real money, especially for those who enjoy dark and complex adventure themes. The slot has the Nolimit’s usual xWays, xSplit, xNudge wild, and around ten other unique features that keep the gameplay fresh.

Provider
Provider
Nolimit City
Released Date
Released Date
31 Aug 2021
Theme
Theme
Adventure & Treasure Hunting
Reels
Reels
5x3
Paylines
Paylines
108+
RTP
RTP
96.08%
Volatility
Volatility
High
Minimum Bet
Minimum Bet
0.20
Maximum Bet
Maximum Bet
70
Max Payout
Max Payout
66,666x

Mental Review and Gameplay

The reel setup in Mental is distinctive, featuring a 5-reel layout configured in a 3-2-3-2-3 format. This unconventional grid design allows for 108 starting paylines, which can expand to over a billion using the innovative xWays mechanic. Winning combinations are achieved by landing matching symbols from the leftmost reel to the right. The Fire Frames feature boosts paylines, while the Mental Transform and Enhancer Cells enrich the reels with split symbols, multipliers, and wilds.

Detailed attention has been given to the asylum theme, with disturbing patient symbols, sepia visuals, and eerie flickering lights. Even the sound design evokes a deep sense of unease, making this game one to remember.

Mental Betting, RTP, and Win Potential

The game has a flexible betting range from €0.20 to €70, appealing to both casual players and high rollers. It offers a default RTP of 96.08%, which increases to 96.68% with the Bonus Buy feature. Players can aim for the maximum win of 66,666x, but bear in mind that the hit frequency stands at 34.19%, with free spins triggered, on average, every 1 in 216 spins.

How to Land Big Wins in Mental Slot

Landing the 66,666x max win in the Mental slot is no easy feat, but here are some tips to increase your chances. Remember, slots are games of chance, and no strategy guarantees a win.

watch icon
Time Needed:
5-10 Minutes
cards icon
Device Required:
PC, Smartphone, Tablet
A panda and a human stands in front of a spooky mansion with MENTAL logo and moon in the background.

STEP 1

Understand the Mechanics

Mental is a very complex game with multiple unique features. You need time to understand how each works and affects the game’s outcome. Try playing it in demo mode first.

Digital art of a surprised cartoon panda standing next to a "Wanted" poster featuring a human face in a Western-style street.

STEP 2

Pay Attention to the RTP

Some casinos offer different RTP versions of Mental. Make sure you’re playing the version with the highest percentage, which is 96.08%. The Bonus Buy increases it to 96.68%.

Digital art of a cartoon panda in a pink high chair facing a seated figure with a shaved head and yellow outfit in a spooky, moonlit scene with bats.

STEP 3

Start With Smaller Bets

Mental is extremely volatile, meaning hitting the big wins may take some time. Starting with smaller bets will help you play for longer and potentially hit the bonus games. If you prefer quicker access to gameplay without lengthy verification processes, no-KYC casinos provide easy registration process.

Digital art of a thinking cartoon panda next to a figure in restraints with a "MENTAL" sign above, set against a spooky, moonlit background with a haunted house.

STEP 4

Buy One of the Bonuses

There are 3 different bonus games in Mental. If you’re impatient, use the Bonus Buy to buy a specific bonus game for a set price. There’s also a random bonus buy option.

Mental Pros and Cons

Pros Pros
Pros 66,666x max win
Pros Unique special features
Pros 3 Bonus Buy options
Pros Detailed graphics and sound design
Cons Cons
Cons Different RTPs
Cons The base game doesn't pay well

Mental Symbols and Their Payouts

The symbols in Mental feature body parts and mental asylum patients, each adding to the eerie atmosphere. Here’s how much each symbol type pays:

Symbol Bet Multiplier Values (3, 4, 5)
Skeletal Hands 0.1x, 0.5x, 1x
Lungs 0.15x, 0.55x, 1.05x
Heart 0.2x, 0.6x, 1.1x
Brain 0.25x, 0.65x, 1.15x
Eye 0.3x, 0.75x, 1.25x
Patient 5 0.4x, 0.9x, 1.5x
Patient 4 0.45x, 1x, 2x
Patient 3 0.5x, 1.1x, 2.5x
Patient 2 0.6x, 1.25x, 3.75x
Patient 1 (Hannibal-esque) 0.75x, 1.5x, 5x

Mental Bonuses and Special Features

Feature Description
Fire Frames Randomly converts 1-13 positions on the reels into Fire Frames, splitting symbols for more paylines.
Dead Patient Multipliers Reveals a win multiplier (x5 to x9,999) attached to a premium patient symbol when landing 2 Dead Patient symbol multipliers.
Enhancer Cells Activated with 4/6 Fire Frames on reels 2 and 4. Reveals xWays, xSplit, wilds, or dead patient features.
Mental Transform Triggered by landing Spider symbols, transforming them into xWays, xSplit, Dead Patient, Wild symbol or Patient symbol.
Autopsy Free Spins Mode Triggered by collecting three Scorpion symbols. Awards 8 spins with sticky Fire Frames and the potential for upgrades.
Lobotomy Free Spins Mode Activated with 1 Spider and 3 Scorpions. Upgrades include sticky Spiders and Dead Patient multipliers.
Mental FreeSpins Mode Triggered with 3 Scorpions and 2 Spider symbols. Features include sticky Spiders, Mental Transform triggers, and non-decreasing Dead Multiplier.

Play Mental for Free: Try Before You Spin

The Mental slot may be complicated with tonnes of unique features, but you can test them all for free with the demo version. The free play mode allows you to explore the game’s mechanics and bonuses and see if the game suits your style.

Play Mental for Real Money

Once you feel confident in demo mode and like what you see, just deposit in one of the Mental online casinos we’ve listed above. Check for any bonuses upon registration, find the online slot lobby, and spin away. Many EU casinos offer Mental slot with competitive bonuses, ensuring a regulated and secure gaming experience for players across Europe.

Mental Game Provider

Nolimit City

Nolimit City is a leading iGaming software provider, well-known for its innovative, high-quality online slot games. The company was founded in 2013 and has established itself as a prominent player in the online casino industry, recognised for its unique approach to game design and engaging gameplay mechanics.

Conclusion

Mental isn’t your average slot game. It’s grim, complex, and incredibly engaging for the right audience. The combination of extreme volatility, unique mechanics, and dark atmosphere makes it a standout in Nolimit City’s catalogue—definitely worth a spin or two.

FAQ

Mental slot is extremely volatile, meaning wins can be large but less frequent. It’s designed for high-risk, high-reward gameplay.

The hit frequency is 34.19%, with the Mental free spins feature triggered, on average, every 1 in 216 spins.

Mental slot has unique features such as Fire Frames, Dead Patient Multipliers, Enhancer Cells, and different types of free spins with potential upgrades.