Mental II Demo & Review

Mental II review

Mental II returns to the asylum on a 3-2-3-2-3 grid. Fire Frames split one to thirteen random positions into two, and Enhancer Cells under reels 2 to 4 switch on as more frames appear. Two Dead Patient symbols reveal a patient with a multiplier from x5 up to x500.

xWays, xSplit, xNudge and the new xMental pile on more features. Nolimit rates it Insane volatility, with a 99,999x cap, among the highest in the catalogue. Like the original, the theme is extremely dark.

Features and bonus rounds

Fire Frames
Split 1–13 random positions into two.
Dead Patients
Reveal multipliers from x5 to x500.
Enhancer Cells
Activate as more Fire Frames land.

Mental II RTP, volatility and max win

RTP: the default return to player is 96.06%, meaning that over a very large number of spins the game is designed to pay back around 96.1 units for every 100 wagered. Some casinos may run a lower configuration; the info screen inside the game shows the exact figure. How RTP works.

Volatility: Mental II is a very high volatility slot. Most sessions will be dominated by small wins and dead spins, with the bulk of its return concentrated in rare bonus rounds. A short session can easily lose its whole budget without a meaningful hit – the demo is the safest way to see how swingy it really is. Volatility explained.

Max win: the maximum payout is 99,999x the stake. What max win really means.

Pros

  • Very high 99,999x win ceiling
  • Full game playable in the official free demo

Cons

  • Very high volatility – long dry spells are normal
  • Bonus buy is costly and banned in some markets (e.g. Great Britain)
  • Short-session results can differ widely from the RTP

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Mental II FAQ

What is the RTP of Mental II?

The highest published RTP of Mental II is 96.06%. Casinos may be able to configure a lower RTP – always check the in-game info screen.

What is the max win on Mental II?

Mental II has a maximum win of 99,999x your stake. Max wins are extremely rare and should not be expected in normal play.

Is Mental II high volatility?

Mental II is rated very high volatility by Nolimit City. Wins are less frequent but can be larger.

Can I play Mental II for free?

Yes. You can play the official Mental II demo on this page with play money – no sign-up or deposit required.

Does Mental II have a bonus buy?

Yes, Mental II includes a bonus buy option in markets where it is permitted. It is not available in Great Britain and some other regulated markets. Buying the bonus does not improve your odds.

Data sources: https://nolimitcity.com/games/mental-2. Figures last verified 10 November 2026. Spotted an error? Tell us.