Mental 2 Slot

4.6/5
Based on our expert’s review. Reviewed by
Nolimit City Slots
Review by
Slobodan Brkljac
Updated: 07/04/2025
Review by
Slobodan Brkljac
Updated: 07/04/2025

Nolimit City is back with a second outing to its hugely controversial insane asylum in Mental 2. If you thought the original release was dark and sinister, it’s even creepier in the sequel. The theme might be decidedly chilly, but expect plenty of features with free spins and multipliers among the highlights. Insanely volatile, with a 96.06% RTP, the Mental 2 brings a max win of mighty 99,999x! Are you brave enough to enter the asylum? Find out in this detailed Mental 2 review.

Max Win
99,999x
Play
T&Cs Apply

18+. New customers only. 100% Deposit Bonus up to £100 on the first deposit. 30x wagering on Deposit and Bonus (game weighting applies) + 50 Bonus Spins (Big Bass Bonanza) of £0.10. Min. deposit £20. Play responsibly • T&Cs apply. #ad BeGambleAware.org

Provider
Nolimit City
Type of Slot
Video Slot
Theme
Horror
Reels
5
Paylines
108
Stakes Range
20p–£100
Bonus Features
9
Free Spins
8–10
Multiplier
5x–9,999x
Max Win
99,999x
RTP
96.06%
Volatility
Very High

Mental 2 Demo

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T&Cs Apply 18+. New customers only. 100% Deposit Bonus up to £100 on the first deposit. 30x wagering on Deposit and Bonus (game weighting applies) + 50 Bonus Spins (Big Bass Bonanza) of £0.10. Min. deposit £20. Play responsibly • T&Cs apply. #ad BeGambleAware.org
18plus uk-gambling-commission online-slot-co-uk-logo agechecked-verification-provider
T&Cs Apply 18+. New customers only. 100% Deposit Bonus up to £100 on the first deposit. 30x wagering on Deposit and Bonus (game weighting applies) + 50 Bonus Spins (Big Bass Bonanza) of £0.10. Min. deposit £20. Play responsibly • T&Cs apply. #ad BeGambleAware.org

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Mental 2 Slot RTP, Details and Wager Limits

The standard setup in the Mental 2 slot game by Nolimit City includes 5 reels and 108 ways to win. The splitting symbols mean the ways to win can get much higher. Create winners by landing 3 or more matching symbols or wilds on adjoining reels, starting from reel 1.

Stakes range from 20p to £100 per spin. Quick spin and autoplay modes are available in some areas, though the UK is currently excluded.

The Mental 2 RTP is 96.06%, and this is the version you should find at most UK slot sites. However, keep in mind that there are versions with lower RTP values, going down to a meagre 84.01%. The hit rate is 31.41%, with the free spins triggering once every 249 spins on average. The max win probability is 1 in 16 million. Just like in the original, the volatility here is insanely high.

On the other hand, the Mental 2 max win is 99,999x the bet. Exclude the big progressive jackpot slots, and this is as good as it gets.

Mental 2 Theme—This Asylum Is Not for the Faint of Heart

mental-2-slot-base-game

The original Mental slot was one of the best slots in terms of design—at least, in my opinion. The sequel is up there as well. The sepia-tinged visuals in Mental 2 are genuinely disturbing. In my experience, online slots don’t come more x-rated than this.

With a cell in the background (with Help Me scrawled on the wall), the reels are made up of body parts and extremely sad-looking patients. They’re joined by blood bags, skulls, sinks, and blood-spattered patients on an operating table. Carry On Doctor, this most certainly is not.

The grungy, guitar-heavy soundtrack complements the spooky visuals well. Combine that with the shrieks, squeals, slices, and creaking doors, and you’ll get a horror extravaganza full of disturbing atmosphere here.

Here’s what the paytable offers:

Symbol Payouts/Info
mental-2-slot-foot-symbolFoot 3, 4 or 5 = 0.1, 0.25 or 0.5x
mental-2-slot-spine-symbolSpine 3, 4 or 5 = 0.15, 0.3 or 0.55x
mental-2-slot-ribs-symbolRibs 3, 4 or 5 = 0.2, 0.35 or 0.6x
mental-2-slot-child-skeleton-symbolChild Skeleton 3, 4 or 5 = 0.25, 0.4 or 0.7x
mental-2-slot-skull-symbolSkull 3, 4 or 5 = 0.3, 0.45 or 0.75x
mental-2-slot-patient-1-symbolPatient 1 3, 4 or 5 = 0.3, 0.5 or 1x
mental-2-slot-patient-2-symbolPatient 2 3, 4 or 5 = 0.35, 0.6 or 1.25x
mental-2-slot-patient-3-symbolPatient 3 3, 4 or 5 = 0.4, 0.7 or 1.5x
mental-2-slot-patient-4-symbolPatient 4 3, 4 or 5 =0.45, 0.75 or 1.75x
mental-2-slot-patient-5-symbolPatient 5 3, 4 or 5 = 0.5, 1 or 2.5x
mental-2-slot-wild-symbolWild Substitutes for the symbols above
mental-2-slot-child-cognitive-scatter-symbolCognitive Scatter Appear on reels 1, 3, and 5; 3 trigger the Bloodletting Spins round
mental-2-slot-child-disembodied-scatter-symbolDisembodied Scatter Appear on reels 2 and 4; can trigger Surgery Spins or ExperiMENTAL Spins

Mental 2 Mobile Slot

mental-2-mobile-slot

You can play the Mental 2 slot at mobile casinos without any issues. Flip your device into landscape mode for the best playing experience. The graphics are definitely up to the job on the smaller screen devices as well. Based on my time with it, I found that playing this mobile slot at Mental 2 casinos is on par with its desktop counterpart.

Mental 2 Bonus Features

There’s loads of bonus action in Mental 2, especially compared to what you get in many new slots. Look out for splitting symbols, multipliers, instant win prizes of up to 9,999x, 2 free spin rounds, and much more.

Fire Frames and Fire Reels

On any spin, between 1 and 13 positions can become Fire Frames. Symbols here split into 2. Better still are Fire Reels, where symbols split into 3. Both options bring more opportunities for creating wins.

Dead Patients

This feature triggers when you land 2 Dead Patients on the same spin. One of the symbols reveals a multiplier value of between 5x and 9,999x.

Enhancer Cells

These are located below the middle 3 reels. They’re activated by landing 4, 6, or 8 Fire Frames or Fire Reels. The Enhancer Cells award wilds, nudging wilds with multipliers, splitting wilds, Patient symbols, or xWays, which offer 3 matching expanding symbols.

xHole

This feature triggers when an xHole symbol lands in a Fire Frame or a Fire Reel on the second position of the third reel. Standard and wild symbols are moved to random positions on the game grid. They also increase in size by 2, 4, or 8 or boost a multiplier in the case of an xWild. The xHole symbol then turns wild.

xMental

This feature triggers when an xMental symbol lands in a Fire Frame or Fire Reel. You’ll then receive a free spin with the following modifiers:

  • All reel positions will get Fire Frames.
  • Enhancers will reveal xWays, xNudge Wild, or xSplit.
  • Chance of triggering xHole.

Mental Transform

Trigger this option by landing Disembodied Scatters on reels 2 and 4 on the same spin. These triggering symbols then morph into xWays, xSplit, Dead Patient, Wild, or Patient symbols.

Bloodletting Spins

mental-2-slot-bloodletting-spins

Trigger this round by landing Cognitive Scatters on reels 1, 3, and 5 on the same spin. You’ll receive 8 free spins with sticky Fire Frames and Fire Reels. Landing 1 or 2 Disembodied Scatters upgrades this round to the Surgery Spins or ExperiMENTAL Spins and adds another 1 or 2 spins, respectively.

Surgery Spins

mental-2-slot-surgery-spins

Landing 3 Cognitive Scatters plus 1 Disembodied Scatter awards 9 Surgery Spins. Like in the Bloodletting Spins round, the Disembodied symbol turns sticky and triggers the Mental Transform feature on each spin.

The Dead Multiplier is also in play here. Dead Patients come with multipliers. The highest one on display is collected. The Count is equal to how many of those symbols are on the reels. When a new Patient symbol appears, the collected multiplier is awarded to the associated Patient. When a multiplier is transferred, the Count drops by 1.

For example, if Patient (1) has a 10x multiplier and a Count of 3, the first 4 instances of Patient (1) get the 10x multiplier.

Land a Disembodied Scatter, and you’ll be upgraded to the ExperiMENTAL Spins. One extra spin is added to your total.

This round is quite complicated, so I suggest trying the Mental 2 demo slot first. It’s one of thousands of free-to-play slots that you can find here at Online-Slot.co.uk.

ExperiMENTAL Spins

mental-2-slot-experimental-spins

Land 3 Cognitive plus 2 Disembodied Scatters, and you’ll receive 10 ExperiMENTAL Spins. You’ll get all the Surgery Spins extras plus a Mental Transform trigger with every sticky Disembodied symbol that lands. The Dead Multiplier count doesn’t reduce during this round, either.

Nolimit Booster and Nolimit Bonus (Not Available in UK Online Casinos)

Increase your stakes, and you can boost your chances of landing a bonus feature.

  • xBet: Guarantees a Cognitive Scatter on reel 1. (1.4x per spin)
  • Fire Frames: Guarantees Fire Frames on all positions. (6x the bet)
  • hole Activation (99x the bet)
  • xMental Activation (3,200x the bet)

You can also buy a bonus directly:

  • Bloodletting Spins: Get 8 to 14 free spins (100x the bet)
  • Surgery Spins: Get 9 to 17 free spins (250x the bet)
  • ExperiMENTAL Spins: Get 10 to 20 free spins (1800x the bet)
  • Random Free Spins: Bloodletting (50%), Surgery (40%), or ExperiMENTAL (10%) for 330x the bet
  • God Mode: Offers a shot at landing the maximum 99,999x win (6,666x the bet)

None of these options are available to UK players, though.

Mental 2 Slot Verdict: Mad for Mental 2

4.6/5
Based on our expert’s review. Reviewed by
Mental 2 Slot

I didn’t think Nolimit City could ramp things up even further than they did in the original Mental, but they’ve done it with Mental 2.

Pros
  • 99,999x max win
  • Loads of variety in bonus features
  • Terrific design
Cons
  • It’s insanely volatile
  • Gameplay is a bit complicated
  • The theme won’t be for everyone

The theme and design in the Mental 2 slot are arguably even more controversial than in the original. However, that’s not the only fun part about this game. The gameplay really stacks up as well, offering a huge amount of variety.

Still, just like the theme, that gameplay isn’t for the faint-hearted. The volatility is insanely high. Nolimit City has ramped up the potential rewards with the 99,999x max win, which is as good as you’ll find anywhere else.

Mental 2 won’t be for everyone. If you don’t mind the rather disturbing theme, you’d be mad to miss this slot.

For the lovers of horror-themed slots, we also recommend Nolimit City’s Serial. You can also check out ELK Studio’s Diablo Reels or Life and Death™ by Hacksaw Gaming.