Mental (NoLimit City) – Review & Demo Play

Mental - Overview

Mental drops you into a sepia prison of flickering lights and uneasy whispers. It runs on five reels in a 3-2-3-2-3 layout that starts at 108 ways to win, with reels stretching skywards during play. Volatility is extreme, so the ride swings hard between drought and delirium. RTP sits around 96.08% depending on version, with some sites using a lower setting. The headline is the max payout of 66,666 times stake, reached in that infamous This is Mental moment.

Slot Details - Mental

Wins land when three or more matching symbols hit on adjacent reels from the left. xWays can bloat symbol stacks and send the ways count into the stratosphere, while the grid itself can extend up to twenty rows. Hit rate data points to frequent small connections in the calm before the features kick off. When the engine is humming with frames and splits, the number of win routes can feel near limitless and the pays can spike fast.

Stakes generally start at 20p a spin, with upper limits dependent on the site. Play is snappy on mobile and desktop alike. RTP is version based, most commonly 96.08% but some operators use a reduced figure near 94%. Outside the UK there is an optional bonus buy with multiple price points, each carrying its own theoretical return. I always check the in-game info panel in real money mode to confirm which setting I’m on before I settle in.

Theme, Audio + Symbols in Mental

The asylum setting is grim, with cracked tiles, sepia grime, and a soundtrack that slithers under the skin. It is built to unnerve rather than charm, and it works. The whole presentation is tight and immersive, with Fire Frames licking around positions and jolting animations that suit the subject. If you prefer light and cheerful, this will feel heavy. I love horror slots, and this one leans fully into its identity without winking at the player.

Low pays are body parts, sketched like Victorian specimens, covering hands, lungs, heart, brain, and eye. High pays are five patients, tagged one through five, with Patient 1 paying up to five times for five of a kind. A skull is the wild, and scorpion and spider scatters trigger features. The Dead Patient symbol is the tense one, as two in view reveal a premium patient with a multiplier that can reach 9,999 times its count for explosive lines.

Mental Symbols and Paytable

Symbol	Quantity	Payout
	5	x5
	4	x1.5
	3	x0.75
	5	x3.75
	4	x1.25
	3	x0.6
	5	x2.5
	4	x1.1
	3	x0.5
	5	x2
	4	x1
	3	x0.45
	5	x1.5
	4	x0.9
	3	x0.4
	5	x1.25
	4	x0.75
	3	x0.3
	5	x1.15
	4	x0.65
	3	x0.25
	5	x1.1
	4	x0.6
	3	x0.2
	5	x1.05
	4	x0.55
	3	x0.15
	5	x1
	4	x0.5
	3	x0.1
	Special
	Special
	Special
	Wild

Bonus Features in Mental

Fire Frames ignite one to thirteen positions on any spin. Symbols landing inside split in two, inflating ways and creating extra hits. Enhancer Cells sit on the bottom of reels two and four and wake up when those reels carry enough Fire Frames. When active they can reveal a wild, a patient, a Dead Patient, xWays that add three identical symbols, xSplit that doubles symbols and turns into two wilds, or an xNudge wild that grows and raises a multiplier.

A spider landing on reel two or four triggers a Mental Transform, turning into one of the key enhancers or a premium. The Dead Patient feature is the pulse raiser. When two Dead Patient symbols land together, one of the premium faces appears with a random multiplier from five up to 9,999 applied as symbol count rather than a straight win boost. Line up those faces across split reels and the totals can jump far quicker than you expect.

Free spins come in three flavours. Autopsy spins start from three scorpions and award eight spins, with up to five positions lit and frames sticking for the round. Land a spider to climb into Lobotomy spins where the spider stays sticky, transforms every spin, and a Dead Multiplier is collected and spent down as it transfers to new patients. Hit two spiders to reach Mental spins, where both spiders stick and the Dead Multiplier count does not drop between transfers.

RTP and Variance - Mental

This is high variance by design. Base game hits keep you engaged, but the meaningful swings live in the features where frames, splits, and patient multipliers stack. The common RTP setting is 96.08%, though an alternate lower configuration exists and plays tighter. I’ve learned to check the paytable or help screen when wagering real money to confirm the percentage in use. The headline prize is 66,666 times stake and the bonus rounds are your ticket to that kind of session.

Expert Verdict on Mental

I rate Mental as one of the most intense horror slots around. The mix of Fire Frames, Enhancer Cells, xWays, xSplit, xNudge, and Dead Patient multipliers creates real depth, and the trio of free spins rounds ties it all together. It can feel complex at first, so a few demo runs help. If you can handle the theme and the swing, the game offers serious potential and proper suspense. Not gentle, not cosy, but absolutely gripping when it catches.