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Mental Slot by Nolimit City

Mental
Mental
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Updated: 23.09.2025
Reviewed by: Ella Houghton
Mental is a game only for lovers of everything creepy. Its theme is difficult to digest as well as the gameplay. It will take some time before you can fully understand what is going on on the screen. Here you can count on Fire Frames symbol splitting, Dead Patients symbol multipliers up to 9,999x, 6 modifiers, a Mental Transform feature, and a 3-level Bonus Round.

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In this review
  1. Slot details
  2. Theme
  3. Bonus Rounds & Free Spins
  4. Summary
  5. Where to play
General information about Mental slot

General information about Mental slot

Rating by Ella Houghton:
8.4
Nolimit City
Write a review +25 SJ points
  • Release Date:
    31.08.2021
  • Volatility:
    High
  • RTP:
    96.1%
  • Multiplier:
    Yes
  • Max. win:
    66,666x
  • Bonus game:
    No
  • Free spins:
    Yes
  • Scatter Symbol:
    Yes
  • Wild symbol:
    Yes
  • Symbol Stacked:
    No
  • Jackpot Game:
    No
  • Slot lines:
    108
  • Slot reels:
    5
  • Layout:
    5-20
  • Stakes range (€/£/$):
    0.20 to 70
  • Slot Theme:
    Movie
  • Technology:
    HTML5
More infoLess info

Live stats from Slotsjudge

Slotsjudge employs its proprietary simulator, which runs through 10,000 gameplay rounds daily and updates data regularly, providing the most recent analysis, as reflected in the latest statistics. Based on this current data for Mental (updated), the simulated RTP stands at 98.37%, slightly higher than the declared RTP of 96.1%, indicating a favorable edge in the long run. The hit frequency of 18.48% suggests moderate chances of landing winning spins, while the average win multiplier of 5.32x points to consistent but not overwhelming payouts. With a maximum win of 2,602 times the stake and high volatility, players could experience sizable jackpots but should be prepared for extended dry spells. Overall, the data indicates a game that balances regular opportunities with the potential for significant payouts, making it a notable choice for those comfortable with higher risk and rewards.
  • Declared RTP:
    96.1%
  • Simulated RTP:
    98%
  • Bets sum:
    10000 €
  • Wins sum:
    9837 €
  • Bets:
    10000
  • Average Win:
    5.32 €
  • Max Win Observed:
    2602 €
  • Bonus Frequency:
    44
  • Hit Rate:
    18%
  • Wins:
    1848
More infoLess info

Licensed and tested by

  • AGCO
  • Gambling Comission
  • ISO 27001
  • MGA
  • ONJN
  • Spel inspectionen

Slot details & Wager limit

All actions take place on the playing field and 108 paylines. You can place stakes from €0.20 to €70 per spin. You will see that 1 to 13 positions are surrounded by flames in the base game - they divide the symbols into 2 parts. Among the symbols are 5 patients and organs.

The base game activates the Dead Patient feature when 2 Dead Patient symbols land. 1 of the trigger symbols turns into a Patient symbol with a multiplier of up to 9,999x ​​(a multiplier of symbols, not a multiplier of wins).

Reels 2 and 4 come with Enhancer cells in the bottom position, and they are activated by 4 or 6 fire frames, respectively. After this feature is triggered, you will receive 1 of the following modifiers:

  • Wild symbol
  • One of 5 Patient symbols
  • Dead Patient Symbol
  • xWays shows 3 matching symbols
  • xSplit splits the symbol on each reel in half and turns itself into 2 Wild symbols
  • xNudge Wild is nudged to become fully visible, and each nudge increases the multiplier by 1

There is also a Mental Transform feature that starts when the Spider symbol lands on 2 or 4 reels. Spiders turn into premium symbols.

Mental RTP and Volatility

8.4 
The slot has high volatility and an RTP is 96.06%.
This game has a brutal design and equally brutal volatility. RTP may be 96.06%, 94.08%, but at best it is 96.06% - quite good considering that the average RTP in the market is 96%.

Mental Theme

8.2 
Playing this slot might not be a good idea if you want to get a good night's sleep. Its difficulty is so high that reading its review and watching its gameplay are equally insane. It will take some time before you can fully understand what is happening on the screen. Unleashing potential is accompanied by a disturbing story about an experiment on patients that has already been censored in many markets. All in all, a "fun" ride awaits you.
Mental Theme
Patient 1 pays up to 5x, Patient 2 pays up to 3.75x, Patient 3 pays up to 2.5x, Patient 4 pays up to 2x and Patient 5 pays up to 1.5x - these are Premium symbols. Low-paying symbols are organs: Eye pays up to 1.25x, Brains pays up to 1.15x, Heart pays up to 1.1x, Liver pays up to 1.05x, and Hand Bones pays up to 1x.
  • Patent 1
    Patent 1
    if you land 3, 4, or 5 symbols, you'll receive 0.75, 1.5, and 5x your wager
  • Patent 2
    Patent 2
    if you land 3, 4, or 5 symbols, you'll receive 0.6, 1.25, and 3.75x your wager
  • Patent 3
    Patent 3
    if you land 3, 4, or 5 symbols, you'll receive 0.5, 1.1, and 2.5x your wager
  • Patent 4
    Patent 4
    if you land 3, 4, or 5 symbols, you'll receive 0.45, 1, and 2x your wager
  • Patent 5
    Patent 5
    if you land 3, 4, or 5 symbols, you'll receive 0.4, 0.9, and 1.5x your wager
  • Eye
    Eye
    if you land 3, 4, or 5 symbols, you'll receive 0.3, 0.75, and 1.25x your wager
  • Brains
    Brains
    if you land 3, 4, or 5 symbols, you'll receive 0.25, 0.65, and 1.15x your wager
  • Heart
    Heart
    if you land 3, 4, or 5 symbols, you'll receive 0.2, 0.6, and 1.1x your wager
  • Liver
    Liver
    if you land 3, 4, or 5 symbols, you'll receive 0.15, 0.55, and 1.05x your wager
  • Hand Bones
    Hand Bones
    if you land 3, 4, or 5 symbols, you'll receive 0.1, 0.5, and 1x your wager
  • xWays
    xWays
    reveals 3 symbols of the same kind and expand the reel(s) height
  • xSplit
    xSplit
    splits one symbol on each reel and double those symbols, it splits itself into 2 Wilds
  • Spider
    Spider
    landing symbol on reel 2 or 4 in the game triggers the Mental Transform feature: xWays, xSplit, Dead Patient, Wild or Patient symbol
  • Wild
    Wild
    substitutes for all other symbols except Spider, Scorpion, Dead Patient symbols
  • Scorpion
    Scorpion
    3 triggers Autopsy Free Spins
  • Dead Patient
    Dead Patient
    2 trigger Dead Patient feature

Mobile compatibility

Mobile compatibility
Mental was created using HTML 5 technology, so it is mobile-friendly! You can play on any modern mobile phone and the only condition is a good internet connection. It also uses Evoplay's advanced game engine, Spinential, which delivers 10x faster loading times, and an improved user interface for a truly incredible gaming experience.

Bonus Rounds & Free Spins

7.9 

The slot awards 8 spins for 3 landed Scorpion Scatter. Every Scatter that lands in the Fire Frame gives an extra free spin. Up to 5 random positions are enhanced with Fire Frame. 

Lobotomy Free Spins feature is triggered when 3 Scorpion Scatter lands on the board along with 1 Spider Scatter. You will receive 9 free spins. This feature is based on the rules of the lower-level attack function. All dropped symbols during this feature become Sticky, activating the Mental Transformation feature with each spin. The highest multiplier is collected and applied to the new symbol.

Having landed 2 Spider symbols, the slot triggers the Mental Free Spins feature. This feature is triggered from the main game if you win 3 Scorpion Scatters and 2 Spider Scatters at the same time. This gives 10 free spins, and the "Mental Transformation'' Spider symbol is also displayed here. Also, the counter of the Dead Multiplier does not decrease by 1 when transferred to a new Patient symbol, unlike the previous feature.

Mental - Online slot

Mental Max Win

9.9 
The maximum win is 66,666 times the stake.
The potential of 66,666 times the stake can be achieved when this thing works at least at 20%. When testing this game, we felt its power and the power of the free spins feature that will allow you to get the maximum win.

Overall Rating

8.4
You can take this torture and make sense of everything that happens when this game works to its fullest (or at least half). Honestly, this slot is the hardest, most confusing, and disturbing we've ever seen! The visuals are terrifying but well done and accompanied by an intense horror soundtrack that gives you goosebumps. You'll need to clear your head after your Mental session so keep some light-heart fruit game on hand. 
Hits
Fire Frames split symbols
A large multiplier of the Dead Patient symbol
Six modifiers
Three levels of the Bonus Round
Misses
Very scary design/soundtrack
RTP ranges
High volatility

FAQ

Do I Need to Make a Deposit to Play this Game?

No, you can play a Mental slot machine even without a casino account using its free Demo mode.

How does the Dead Patient feature work?

You need to land 2 Dead Patient symbols and 1 of them turns into a premium symbol with an added multiplier. But this is not a win multiplier, but a symbol multiplier.

What is the Return to Player (RTP) rate of this slot?

The highest RTP of the slot is 96.06%. However, operators can reduce it. Be careful!

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Ella Houghton
Ella Houghton
Expert in: News, Blog, Slot reviews, Payments
Ella is a professional content-writer with 8 years of experience in the casino sphere. She has broad knowledge of gambling related themes and is happy to share this with Slotsjudge.

2128 articles

Reviewed by Editor-in-Chief
Nikita Lukanenoks
Rate this article and leave a comment

Overall rating

Based on 2 reviews

8/10
Sloto Toto own avatar
Sloto Toto
6 lvl Superstar
6
Winning: €5
Multiplier: x12
Extremely epic and dark slot from NoLimit. One of their best flagship releases, and probably the most provocative.
The atmosphere is so vile, my God. What’s even more vile (in my opinion) is the gameplay. It’s just overloaded with features and enhancers – symbols splitting, multipliers, xWays, xNudge, symbols transformation, 3 FS modes…
Too much action and too much volatility to my taste. Ofc, slot can pay big and can pay big from any spin. Still, just not my slot.

Review image 1701-0
30.09.2022
Primstan own avatar
Primstan
6 lvl Superstar
10
Winning: €32
Multiplier: x163
Mental welcomes you with its unique Mental Asylum theme that has magnificent design and looks. The amount of features you will encounter while spinning this is gigantic. Xsplits, xways, xnudges, wilds, dead patient's multipliers. You will not be bored, since the slot has 3 different free spins - Autopsy, Lobotomy and finally Mental spins. Even base game can pay a lot and it does, but dead spins are also there. In FS dead patients is what you want, since it gives an X to premium symbols. Top slot
Review image 1240-0
30.07.2022
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