Mental II Slot Review – Free Play by Nolimit City

Mental II Slot Facts

The Mental II slot from Nolimit City pushes into a 96.06% RTP horror sequel with a maximum payout of 99,999 times the stake and an Insane volatility rating that never lets up.

Set inside the same asylum as the original, the sequel unfolds across a 3-2-3-2-3 layout unlike a standard grid, working through 108 ways to land a win as Fire Frames, splits, and multipliers stack until a single spin barely resembles where it started. It is a punishing, feature-dense session built for players who want their volatility uncompromising.

Mental II Theme & Design

Nolimit City keeps the action inside the same institution as the original Mental, continuing the story of a daughter whose sanity keeps slipping as the ward closes in around her. The presentation leans hard into psychological horror, built around Patient symbols, Cognitive and Disembodied scatters, and a menacing xGod icon that hints at forces far beyond ordinary madness. The 3-2-3-2-3 reel shape breaks away from a standard grid, visually reinforcing the sense that nothing about this ward was built right. Between the Dead Patients, the Enhancer Cells, and names like xHole and xMental, the symbol set and mechanic naming both lean into dread rather than spectacle, keeping the disturbing narrative front and center.

How Mental II Plays

Every spin has a chance to turn grid positions into Fire Frames or entire reels into Fire Reels, splitting whatever symbol lands there into two or three pieces and multiplying connections almost immediately. Enough of those Fire Frames wake up the Enhancer Cells sitting under reels 2, 3, and 4, and what comes out of them decides how far a spin can run: a plain wild, a Patient symbol, an expanding xWays reveal, a reel-dividing xSplit, or an xNudge wild that snaps fully into view while adding to its own multiplier. How many Cognitive and Disembodied scatters land together decides which bonus round opens, and each additional Disembodied scatter pushes things further, moving from Bloodletting Spins up through Surgery Spins and into the top-tier ExperiMENTAL Spins, where the Dead Multiplier keeps building without ever resetting. That final tier carries the bulk of the win potential, though a single xGod symbol landing on every reel can skip the climb entirely and hand over the maximum payout in one spin.

RTP, Volatility & Win Potential

Mental II carries a 96.06% RTP, just above the industry average of around 96%, split unevenly between 57.82% contributed by the base game and 38.24% from the bonus rounds. Insane volatility is the label Nolimit City gives it, and the 31.41% hit frequency backs that up, since wins land close to a third of the time but plenty of those hits stay small next to the feature-driven spikes. The bonus round itself shows up roughly once every 249 spins, and a win of 100 times the stake lands around once every 993 spins. The 99,999x maximum payout sits far beyond either of those, with the game’s own math putting the odds of hitting it at roughly 1 in 16,000,000.

Our Verdict on Mental II

This Mental II slot review lands squarely for horror fans who want a slot that fights back. The feature depth, from Enhancer Cells through the escalating ExperiMENTAL Spins, gives dedicated spinners a real reason to chase that 99,999x ceiling. That said, Insane volatility means long dry stretches are part of the deal, and the layered multiplier system takes patience to read before it starts making sense. Players who prefer steadier returns should look elsewhere, but the free demo on this page is a low-risk way to feel out the asylum first.

Mental II RTP, Payout & Specs

Mental II Bonus Features & How They Work

Fire Frames & Fire Reels

Any spin can turn between one and 13 grid positions into Fire Frames, and whatever symbol lands there splits into two matching pieces instead of one. Whole reels, up to 5 of them, can flip into Fire Reels instead, splitting a landing symbol into three copies. Both effects stack together across a single spin, and they are the engine behind almost every big connection in the base game.

Dead Patients

Landing two Dead Patient symbols wakes up this feature, revealing a Patient symbol tied to a randomly picked multiplier that ranges from x5 all the way to x9,999. How big that multiplier lands depends on how many matching Patient symbols are stacked on that same reel, so a heavily loaded reel can turn a modest reveal into a serious win.

Enhancer Cells

Sitting beneath reels 2, 3, and 4, these cells wake up as Fire Frames pile up across the grid: four frames switches on the reel 2 cell, six brings reel 4 online as well, and eight lights up all three at once, with a full Fire Reel counting as either two or three frames toward that total. Once active, each cell reveals a regular wild, a Patient symbol, or one of the signature xWays, xSplit, or xNudge wild modifiers, deciding how far that spin’s multipliers can run.

xHole™

This modifier only fires when its own symbol lands on either a Fire Reel or a Fire Frame, specifically the second cell of reel three. Once that happens, it gathers up the regular paying symbols and any wilds on the grid, redistributes them to new spots, and multiplies each one by x2, x4, or x8 before turning itself into a wild. An xNudge wild caught in the redistribution only has its multiplier boosted, and any Dead Patient multipliers banked earlier are lost rather than carried into the result.

xMental™

Landing an xMental symbol on either a Fire Reel or a Fire Frame anywhere across the grid sets off a bonus extra spin where every single position turns into a Fire Frame. The Enhancer Cells are guaranteed to reveal an xWays expansion, an xSplit division, or an xNudge wild during that spin, and there is still a chance for xHole to fire on top of everything else, making this one of the most loaded single spins the base game can produce.

Mental Transform

Whenever a Disembodied scatter lands on reel 2, or separately on reel 4, it immediately turns into something else: a Dead Patient symbol, a plain Patient symbol, a regular wild, an xWays modifier, or an xSplit. It is a quiet feature on paper, but it means every Disembodied scatter you see is really a second chance at a useful modifier rather than just a bonus trigger.

Scatters

Cognitive scatters can only land on reels 1, 3, and 5, while Disembodied scatters stick to reels 2 and 4. Three Cognitive scatters alone award 8 Bloodletting Spins, adding one Disembodied scatter upgrades that to 9 Surgery Spins, and two Disembodied scatters alongside the three Cognitive symbols unlocks 10 ExperiMENTAL Spins. Any scatter landing inside a Fire Frame adds one extra spin, and one landing inside a Fire Reel adds two, so the exact trigger can pay out a longer round than the base numbers suggest.

Bloodletting Spins

This entry-level bonus round keeps every Fire Frame and Fire Reel sticky for its full duration, so the grid stays expanded instead of resetting each spin. One Disembodied scatter landing during the round bumps it up into Surgery Spins territory along with an extra spin, while two landing at once jumps things straight into ExperiMENTAL Spins with two extra spins thrown in.

Surgery Spins

Everything from Bloodletting Spins carries over, but here the Disembodied symbol itself becomes sticky and triggers the Mental Transform feature on every single spin. The round also introduces the Dead Multiplier, which banks the highest multiplier revealed for each Patient symbol along with a count of how many times it appeared. That saved multiplier then gets handed to the next matching Patient symbols that land, one use at a time, until the count runs out.

ExperiMENTAL Spins

The top tier keeps everything from Surgery Spins running, except now both Disembodied symbols stay sticky and trigger Mental Transform on every spin. The real difference is the Dead Multiplier count, which no longer decreases after moving to a matching Patient symbol. Instead it keeps stacking higher with every new Dead Patient reveal, letting the multiplier snowball for the rest of the round.

xBet™ (Nolimit Booster)

For 1.4 times the base bet, this booster guarantees a Cognitive Scatter lands on reel 1, putting you a third of the way toward triggering one of the bonus rounds before the reels even finish spinning.

Fire Frames (Nolimit Booster)

Paying 6 times the base bet guarantees every single position on the grid turns into a Fire Frame for that spin, maximizing the chance of splits, Enhancer Cell activations, and any modifier that depends on the frames being lit.

xHole™ (Nolimit Booster)

At 99 times the base bet, this booster guarantees the xHole feature fires, scattering and multiplying the grid’s paying symbols without needing to wait for the symbol to land in the right spot naturally.

xMental™ (Nolimit Booster)

The priciest of the direct boosters, costing 3,200 times the base bet, guarantees the xMental feature triggers, handing over the fully-loaded extra spin with Fire Frames covering the whole grid without needing the symbol to land naturally.

God Mode

This is the direct route to the game’s ceiling: for 6,666 times the base bet, the feature chases the max win outright by working toward an xGod symbol landing on every single reel in one spin.

Death Is Just The Beginning

The game’s payout ceiling sits at 99,999 times the base bet, and if a round’s total win ever climbs past that figure, play stops immediately and the full 99,999x is paid out. The fastest way there is landing a single xGod symbol on every reel in one spin, which triggers the maximum win instantly without needing to wait for the multipliers to build up.

Signature Mechanics

In-Game Screenshots

What the Experts Say — Average 9.84/10

Mental II FAQ