What is the RTP of Mental?

The base game RTP is 96.08%. Bought features have their own figures: Autopsy 96.26%, Lobotomy 96.17%, Mental Freespins 96.68% and Lucky Draw 96.42%.

What is the max win in Mental?

66,666 times the base bet. The rules list the simulated odds of hitting it as 1 in 18,000,000 rounds.

How do you trigger Mental Freespins?

Land 3 Scorpions and 2 Spiders for 10 Mental Freespins, or upgrade from Autopsy (2 Spiders) or Lobotomy (1 new Spider) during the feature.

How much does the Mental bonus buy cost?

Autopsy costs 80x the bet, Lobotomy 230x, Mental Freespins 1,000x and Lucky Draw 232x. The maximum base bet for a buy is €70.

What do Dead Patient symbols do?

Two Dead Patients reveal a Patient symbol with a random multiplier from x5 to x9999. In freespins that multiplier is collected and applied to later Patient symbols of the same type.

Can I play Mental for free in Canada?

Yes. The Mental demo on CasinoDemo is free, needs no sign-up and uses virtual credits only.

Mental Guide: Rules, Fire Frames, Dead Multipliers and Freespins

By the CasinoDemo editorial team · Updated 2026-11-09 · How we review

Mental is Nolimit City at its most uncomfortable: an asylum theme, patient mugshots as symbols and a volatility badge that reads Extreme. Under the theme sits a 5-reel game that starts at 108 ways and can stretch to 20 rows, with xSplit, xWays and xNudge all packed into one ruleset.

We played the free demo, read every page of the in-game rules and bought all four options in the Nolimit Bonus menu. The numbers below come from those rules screens and from our own screenshots.

Play Mental demo for free

Mental at a glance

Provider: Nolimit City
RTP: 96.08%
Demo: Free, no sign-up

How Mental works

The rules describe Mental as a 5-reel, up to 20-row video slot with 14 symbols. It starts on 108 win ways, and the current count is shown above reel 2 during play. Wins pay from the leftmost reel to the right on adjacent reels, only the highest win per way is paid, and the win is the symbol value multiplied by the number of winning ways.

The pay table has five Patient symbols and five Organ symbols. At a €1 bet, five Patient-1 symbols pay €5.00 and five Patient-5 pay €1.50. The organs (eye, brain, heart, kidneys and the skeletal hand) pay €1.25 down to €1.00 for five. Small base values, but ways counts in the thousands change that quickly.

The Wild substitutes for every symbol except Scorpion, Spider and Dead Patient.

Mental slot base game with 108 ways and Enhancer Cells under reels 2 and 4 — Base game at 108 ways, with the 1/4 and 1/6 Enhancer Cells under reels 2 and 4.

Fire Frames, Enhancer Cells and Mental Transform

In the base game, 1 to 13 positions get a Fire Frame on each spin. Any symbol that lands in a Fire Frame splits into 2 parts, which is how the ways count climbs.

Under reels 2 and 4 sit two Enhancer Cells. The reel 2 cell opens after 4 Fire Frames and the reel 4 cell after 6. Each cell reveals one of six things: a Patient symbol, a Dead Patient, xWays (reveals 3 matching symbols and expands the reel height), xSplit (splits one symbol on each reel and doubles them, splitting itself into 2 Wilds), a Wild, or an xNudge Wild. The xNudge Wild nudges until fully visible and adds 1 to its win multiplier per step, and several Wild multipliers add together.

Landing a Spider on reel 2 or 4 triggers Mental Transform: the Spider turns into xWays, xSplit, Dead Patient, Wild or a Patient symbol.

Dead Patient multipliers

When 2 Dead Patient symbols land, they reveal one of the Patient symbols with a random multiplier: x5, x10, x15, x30, x50, x100, x200, x500, x1000 or x9999. In the freespins this turns into a collection system. The highest multiplier for each Patient is stored with a Count, and the next new Patient symbols of that type take the stored multiplier until the Count runs out. In Mental Freespins the Count stops decrementing and keeps building.

In our Lobotomy round we saw this in action: Patient badges at x10, x15, x30 and x100 sat beside the reels while Patient symbols carried those values across the grid.

Mental Lobotomy Freespins with Dead Patient multipliers x15 and x100 on Patient symbols — Lobotomy Freespins: collected Dead multipliers attach to Patient symbols.

The three Freespins tiers

Scorpion symbols appear on reels 1, 3 and 5 in the base game. Three Scorpions award 8 Autopsy Freespins, and each Scorpion in a Fire Frame adds 1 spin. During freespins, up to 5 positions per spin get Fire Frames, and they stay for the rest of the feature.

Three Scorpions plus 1 Spider award 9 Lobotomy Freespins. On top of the Autopsy rules, the Spider is sticky and triggers Mental Transform every spin. Three Scorpions plus 2 Spiders award 10 Mental Freespins, with both Spiders sticky and transforming every spin. Each Scorpion or Spider in a Fire Frame adds 1 spin at the trigger.

You can climb mid-feature. In Autopsy, 1 Spider upgrades to Lobotomy (+1 spin) and 2 Spiders go straight to Mental (+2 spins). In Lobotomy, 1 new Spider upgrades to Mental (+1 spin). Dead multipliers from the trigger carry into Lobotomy and Mental Freespins.

Mental Autopsy Freespins spin showing 26,624 ways with x50 and x15 multipliers — Split symbols pushed this Autopsy spin to 26,624 ways.

Mental slot trigger with three Scorpions and two Spiders for Mental Freespins — Three Scorpions and two Spiders trigger Mental Freespins.

Nolimit Bonus buy options

The Nolimit Bonus menu has four options. The rules list the return for each one:

Autopsy Freespins (8 to 11 spins): 80x the bet, 96.26% RTP. Lobotomy Freespins (9 to 13 spins): 230x the bet, 96.17% RTP. Mental Freespins (10 to 15 spins): 1,000x the bet, 96.68% RTP. Lucky Draw: 232x the bet, 96.42% RTP. You get Autopsy (50%), Lobotomy (40%) or Mental (10%) Freespins.

The maximum base bet for a buy is €70. Note that a bought feature stays selected and is charged on every spin until you turn it off.

Mental Nolimit Bonus menu with Autopsy, Lobotomy, Mental Freespins and Lucky Draw prices — The four buys at a €1 bet: €80, €230, €1,000 and €232.

What happened in our demo buys

All buys were at a €1 bet, and each result is a single round, not an average.

Autopsy (€80): one Scorpion landed in a Fire Frame, so we got 9 spins. Ways counts reached 26,624 and 6,300 on separate spins, and the round paid €170.85, about 171x the bet and a little over double the price.

Lobotomy (€230): 10 spins with Dead multipliers up to x100 on screen. It paid €82.20, about 82x the bet, so well short of the cost.

Mental (€1,000): our first attempt was cut off when the demo session timed out partway through. The second buy gave 11 spins and paid €371.30, about 371x the bet, still a big loss against the price.

Lucky Draw (€232): the draw landed on Autopsy with 8 spins, and it paid €27.00, about 27x the bet.

Mental Autopsy Freespins result screen showing 170.85 won in 9 spins — Autopsy buy: €170.85 from 9 spins.

Mental Freespins result screen showing 371.30 won in 11 spins — Mental Freespins buy: €371.30 from 11 spins.

Mental Lucky Draw pick showing 50% Autopsy, 40% Lobotomy and 10% Mental Freespins — Lucky Draw picks one of the three tiers.

RTP, max win and volatility

The base game RTP is 96.08%. The maximum payout is 66,666x the base bet; if a round goes past that it ends and pays 66,666x. The rules put the simulated max payout at 1 in 18,000,000 rounds. The game's own branding rates volatility as Extreme, and our four buys, ranging from 27x to 371x the bet, fit that label.

Our verdict

Mental is dense. Fire Frames, two Enhancer Cells, Mental Transform and a Dead multiplier ledger all interact, and the rules take a while to absorb. Once they click, the freespins tiers make sense: Autopsy is the entry point, and Spiders are what you want to see. The buys are priced steeply, and our demo rounds showed how wide the spread is, from 27x on a Lucky Draw to 371x on a 1,000x Mental buy. Play the demo before spending anything real; this is a game for people who accept long dry spells in exchange for a 66,666x ceiling.

How to play Mental free in Canada

Press Play demo for free on the game page and the Nolimit City demo loads with virtual credits. There is nothing to download, no account to create and no deposit to make, and it works in your browser on desktop and mobile.

Because nothing is at stake, the demo is the easiest way to learn how Mental's features trigger and how often it pays.

Playing Mental for real money in Canada

Real-money online gambling in Canada is regulated province by province. Ontario runs a regulated market where licensed operators are overseen by iGaming Ontario and the AGCO; other provinces offer play through their own provincial sites, such as PlayNow (British Columbia, Manitoba and Saskatchewan), Loto-Québec, PlayAlberta and ALC in Atlantic Canada.

The legal age is 19 in most provinces and 18 in Alberta, Manitoba and Quebec. Only play at sites licensed where you live, set limits before you start, and treat gambling as entertainment, never as a way to make money.

Mental FAQ

What is the RTP of Mental?: The base game RTP is 96.08%. Bought features have their own figures: Autopsy 96.26%, Lobotomy 96.17%, Mental Freespins 96.68% and Lucky Draw 96.42%.
What is the max win in Mental?: 66,666 times the base bet. The rules list the simulated odds of hitting it as 1 in 18,000,000 rounds.
How do you trigger Mental Freespins?: Land 3 Scorpions and 2 Spiders for 10 Mental Freespins, or upgrade from Autopsy (2 Spiders) or Lobotomy (1 new Spider) during the feature.
How much does the Mental bonus buy cost?: Autopsy costs 80x the bet, Lobotomy 230x, Mental Freespins 1,000x and Lucky Draw 232x. The maximum base bet for a buy is €70.
What do Dead Patient symbols do?: Two Dead Patients reveal a Patient symbol with a random multiplier from x5 to x9999. In freespins that multiplier is collected and applied to later Patient symbols of the same type.
Can I play Mental for free in Canada?: Yes. The Mental demo on CasinoDemo is free, needs no sign-up and uses virtual credits only.

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