Mental Slot Demo

Nolimit City is known for pushing thematic boundaries, and this title continues that trend with a setting inside a dark, abandoned mental institution. The slot explores unsettling visuals and mechanics, incorporating a psychological horror theme that may not be for every player. Symbol designs include anatomical illustrations for low-paying symbols—such as brains and lungs—while high-paying symbols represent various patient characters.

Game Layout and Design

The slot uses a 5-reel layout in a 3-2-3-2-3 formation, offering 20 fixed paylines and 108 ways to win. While the configuration isn’t unique, it adds a layer of asymmetry that supports the eerie atmosphere. A muted sepia colour scheme adds to the overall tension, helping to establish the game’s unsettling mood.

Bonus Features

Mental by Nolimit City features a highly complex and volatile gameplay structure, packed with interconnected bonus mechanics and a trio of upgradable free spins rounds. While the horror theme is bold, the slot’s feature design is technically rich and rewards attentive play. Many of the enhancements can be triggered from the base game, contributing to a high level of feature engagement throughout.

Wild Symbols

The wild symbol is represented by a skull and substitutes for all symbols except for the scorpion, spider, and dead patient symbols.
Additional xNudge Wilds may also appear in later stages of the game. These always nudge into full view and increase their win multiplier by 1x for each nudge.

Fire Frames

This is a random base game event where up to 13 symbol positions may ignite.

• Any symbol landing in a fire frame splits into two, increasing the pay ways.
• Landing 4 to 6 fire frames activates the Enhancer Cells.

Dead Patient Feature

Triggered by landing 2 dead patient symbols, this feature reveals one premium dead patient symbol with a multiplier ranging from x10 to x9,999.

Enhancer Cells

Located below reels 2 and 4, Enhancer Cells reveal various feature symbols when activated:

• One of the five patient symbols
• A standard dead patient
• A regular wild
• An xNudge wild (expands with multiplier boost)
• xWays: expands to reveal 3 matching symbols, excluding spiders, scorpions, and dead patients
• xSplit: splits adjacent symbols and turns them into two wilds

Mental Transform

Triggered by landing a spider symbol on reels 2 or 4. The spider transforms into one of the following:

• xWays
• xSplit
• Wild
• Dead patient
• Regular patient symbol

Free Spins Modes

There are three different free spins rounds, each with escalating volatility and potential. Each round can be upgraded during play by landing specific symbol combinations.

Autopsy Free Spins

• Triggered by 3 scorpion symbols on reels 1, 3, and 5
• Awards 8 free spins
• Symbols landing in fire frames add +1 extra spin
• Up to 5 sticky fire frames can be active during the round

Lobotomy Free Spins

• Triggered by 3 scorpions + 1 spider symbol
• Starts with 9 free spins
• Inherits features from Autopsy Free Spins
• The triggering spider becomes sticky, activating Mental Transform
• Introduces the Dead Multiplier feature, where multipliers are assigned to patient symbols and applied when matched
• Each use of a Dead Multiplier reduces its value

Mental Free Spins

• Triggered by 3 scorpions + 2 spider symbols
• Awards 10 free spins
• All features from Lobotomy are active
• Both spider symbols remain sticky, continuing to trigger Mental Transform
• Dead Multipliers are persistent, carrying over as long as new matching patient symbols appear

Max Win Potential

Mental is not a jackpot slot, but it offers a maximum win of 66,666x your stake, placing it among the highest potential payouts in Nolimit City’s portfolio.

RTP and Volatility

• RTP (Default): 96.06%
• RTP (Low): Can drop to 94.08%, depending on operator settings
• Bonus Buy RTP: May increase slightly when using the feature buy option
• Volatility: Extremely high, making this slot suited for risk-tolerant players