Two gravestones land, and Mental hands one Patient portrait a multiplier drawn from a ladder that runs x5 to x9999. The value attaches to the symbol, not to the reel underneath it, and the whole of this Nolimit City slot is built around keeping that symbol on screen. Fire Frames split whatever drops into them. Enhancer Cells under reels 2 and 4 charge up and reveal a booster. Three free-spin tiers then decide how long a collected multiplier survives. Free play here runs the 2021 original, sepia asylum art and all.
Between 1 and 13 positions on the reels take a Fire Frame each spin. Any symbol landing in one splits into two parts, so a single Patient becomes a pair and the ways counter climbs. That counter reads 108 at rest and recalculates constantly, moving to 144, 162, or 256 in ordinary play. xSplit does the same job on purpose, cutting one symbol on every reel in two and splitting itself into a pair of Wilds.
The cell under reel 2 charges on 4 Fire Frames and the cell under reel 4 on 6. A charged cell reveals a Patient symbol, a Dead Patient, xWays, xSplit, a Wild, or an xNudge Wild. xWays reveals three of one symbol and stretches the reel taller. The xNudge Wild always nudges until it shows in full, and every step it moves adds 1 to the win multiplier; land more than one, and those multipliers add together.
Two Dead Patient gravestones set off the reveal. One Patient symbol is picked and handed a random multiplier from a fixed ladder of x5, x10, x15, x30, x50, x100, x200, x500, x1000, and x9999, with the value reflecting the symbol count on that reel. Against a top pay of 5x for five, that ladder is the whole distance to the cap. In standard play, the multiplier resolves and the round moves on. In the upper free-spin tiers, it is collected and kept.
The Spider only lands on reel 2 or reel 4, and it never stays a Spider. It transforms into xWays, xSplit, a Dead Patient, a Wild, or a Patient symbol, so the upgrade symbol doubles as a booster before free spins start.
Three Scorpions award 8 Autopsy Freespins. Add one Spider, and it becomes 9 Lobotomy Freespins. Add two, and it becomes 10 Mental Freespins. Each Scorpion or Spider that arrives with a Fire Frame adds a spin at the trigger, and a split Scorpion or Spider still counts as one.
Autopsy gives up to 5 Fire Frames a spin and makes every one that lands stick until the feature ends. Lobotomy keeps all of that, sticks the Spider so Mental Transform fires each spin, and starts collecting the Dead Multiplier, which transfers to matching Patient symbols as they land and decrements its count with each transfer. Mental Freespins sticks both Spiders and drops the decrement, so a collected multiplier keeps building with every new reveal. Upgrades happen mid-feature as well, worth +1 spin for a single step and +2 for a jump from Autopsy straight to Mental.
Nolimit City publishes buy prices for these modes, from 80x for Autopsy up to 1000x for Mental Freespins.
Mental 2 followed in 2025 and raised the limit to 99,999x, up from 66,666x here. That change is the key difference between them, and the Mental 2 demo is on the site if you want to see the two side by side. The original set the Patient-and-gravestone format for the pair share.
The number above the reels changes almost every spin. Mental idles at 108 ways and recalculates as Fire Frames split symbols and xWays stretches reels taller, so one stake buys a different number of ways from one spin to the next. A combination has to start on reel 1 and continue across neighbouring reels, and the more ways it fills, the more copies of its value it pays. Each way settles once, at its best combination, though different symbols can pay together on a single spin. Reel heights change again between standard play and the free-spin modes, so the counter behaves differently there. The symbol pool changes too. No Scorpion lands once a feature has started, and no Spider lands within Mental Freespins. Watching the counter move is the quickest way to read what a spin actually did.
The stake floor is €0.20 and the studio’s top bet is €70. The RTP is 96.08%, and it splits roughly 58 points from standard play against nearly 38 from the free-spin modes. That split matters more than the headline figure, because almost 40 points of the return depend on a feature you have to wait for.
Nolimit City marks this one Extreme on its own scale, and the label earns itself. Around 34% of spins pay something, which sounds generous until you read what those spins pay. Most return a fraction of the stake. This site files the volatility as High, the top of its own scale, and the studio’s Extreme marking describes the same shape from the other end, long runs of small returns while you wait on a Dead Patient reveal or a Scorpion trio, with the bigger wins spaced well apart.
One limit covers all of it. A round can pay up to 66,666x, and once a win passes that figure, the round closes there with 66,666x awarded. Nolimit City models the outcome at roughly 1 in 18,000,000 rounds.
Ten symbols pay, and the shape of the table explains why everything else in the game exists. Patient-1 tops it at 5x for five, the four other portraits step down from there, and the five organ symbols land within 0.25x of each other at that same depth. Wild, xNudge Wild, xWays, xSplit, Scorpion, Spider, and Dead Patient have no line on the table and earn their place through the rules.
| Symbol | 3 | 4 | 5 |
|---|---|---|---|
| Patient-1 | 0.75x | 1.5x | 5x |
| Patient-2 | 0.6x | 1.25x | 3.75x |
| Patient-3 | 0.5x | 1.1x | 2.5x |
| Patient-4 | 0.45x | 1x | 2x |
| Patient-5 | 0.4x | 0.9x | 1.5x |
| Eye | 0.3x | 0.75x | 1.25x |
| Brain | 0.25x | 0.65x | 1.15x |
| Heart | 0.2x | 0.6x | 1.1x |
| Kidneys | 0.15x | 0.55x | 1.05x |
| Hand | 0.1x | 0.5x | 1x |
Mental puts its value on the symbols and then sets three different rules for how long you keep it there. The pay table is thin and the bonus is rare, and the ladder between them is worth the wait.
Three brain symbols come up lit inside Fire Frames across the first three reels, a Scorpion shows on the last one, and the win is a fraction of the stake. That screen is Mental at rest, busy and loud and paying almost nothing. It is also a fair advert for the design, because everything moving in the frame is the game charging a counter rather than paying you. At 4.6, this is a strong build, and the case for it starts when those counters finish charging.
The art carries a lot of the load. Five Patient portraits drawn like case photographs: an eye, a brain, a heart, kidneys, and a skeletal hand, all sepia under a flickering asylum ceiling. It is one of the more restrained horror slots around, and that restraint is why the gravestone reveal reads as an event rather than noise.
The argument for the game is where the multiplier attaches. Most ways titles put theirs on a wild or on a counter above the reels, so the value fades the moment the wild leaves. Mental stamps it onto a Patient portrait, and the three free-spin tiers are three sets of rules for how long that stamp lasts. Autopsy lets it resolve and go. Lobotomy collects it and spends it down. Mental Freespins collects it and never spends it down. The escalation between those tiers is the whole point of the design.
The counterargument is real. Nearly 38 points of the return depend on a bonus the game hands out sparingly, and the paying table underneath is about as thin as this format allows. Standard play hands you a great many returns smaller than the stake. If you dislike waiting, no amount of Fire Frame animation fixes that.
Nolimit City has been part of Evolution since 2022, and the studio’s catalogue on this site shows how often this stack of x-features comes back. Mental is where the Dead Patient idea first landed, and it holds up against the sequel it spawned. The short version of this review is that the free-spin ladder carries a thin pay table far further than it has any right to go.
