Mental Slot Review

Mental Slot Review

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If you enjoy macabre slot games with a bunch of special features, the Mental slot is perfect for you. This NoLimit City game has a horror theme, three free spins features, multipliers, fire frames, and many other exciting mechanics and features. Its high volatility level makes it risky, but the maximum reward of 66,666 times your stake is worth it!

Design & Topic

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NoLimit City is a top-notch developer noted for its dark-themed, dynamic slot games. It is no wonder Mental features a horror topic based on mental hospitals. You’ll note the symbols shaped like human organs and patients—all of them quite chilling The game occurs in a decrepit hospital, followed by creepy, dramatic music. 

If that isn’t enough, the slot grid is unusual, consisting of five reels with a various number of rows. The first, third, and fifth reels are extended compared to the fourth and the second. Hence, they can contain more rows, which change with each spin. 

The controls and buttons are on the left and right sides of the grid. The spin, auto-play, and turbo-spin options are visible in the bottom right-hand corner. In addition, other functions are situated on the left side, including the bet size setting, mute button, and access to the game paytable. Also, a little start on the left side allows you to buy specific types of free spins

Mental Slot Symbols

Mental Slot RTP & Volatility

The Mental slot game has a high volatility level, making it risky. It ensures rare wins of significant size. On the other hand, its RTP of 96.08% provides excellent winning odds, especially because it increases during specific features. The maximum win available in the game includes 66,666 times your bet. 

Paylines & Bet Size Range

Since it has an unusually extended slot grid, the Mental slot offers multiple paylines. It has 108 ways to win in total. In addition, you can wager between 0.20 and 100 credits per spin. Each time you form a payline, you’ll get a prize depending on the symbols’ payouts, their number, and your bet size. 

Symbols & Gameplay

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The Mental game features five low symbols shaped as human organs. They deliver the following amounts for the smallest bet size of 0.20:

  • Hand: up to 0.20
  • Kidneys: up to 0.21
  • Heart: up to 0.22
  • Brain: up to 0.23
  • Eye: up to 0.25

In addition to the low symbols, this slot also has five high ones. Each of them depicts a specific patient. If you play the game at the lowest stake, you can win:

  • Patient 5: up to 0.30
  • Patient 4: up to 0.40
  • Patient 3: up to 0.50
  • Patient 2: up to 0.75
  • Patient 1: up to 1.0

Finally, Mental has several special symbols, such as a scorpion and a spider, which unlock the special free spins features. Scorpion lands on reels one, three, and five only. 

The game pays solely from left to right. Hence, you need to form a payline containing at least three matching symbols to win. In the best possible scenario, you’ll unlock the lucrative special features and get more chances to hit a big win. 

Mental Slot Special Features

As mentioned before, the Mental game has many special features. Consequently, it appears confusing until you check the paytable and learn the rules. Playing the game for free will also give you a better understanding of its special features, which include:

Fire Frames

Fire Frames is a random feature adding a blazing frame to 1-13 symbols on the reels. These symbols will then split into two identical ones. Fire Frame feature also has a role to play during the free spins. 

Dead Patient

If you hit two dead patient symbols during the base game, they add a multiplier. This feature can multiply your win by 5x, 10x, 15x, 30x, 50x, 100x, 200x, 500x, 1,000x, or 9,999x.

Enhancer Cells

Enhancer cells are visible during the base game below reels two and four. Four to six fire frames activate them. They can reveal:

  • A patient symbol
  • Dead patient symbol
  • xWays
  • xSplits 
  • Wild
  • xNudge 

xWays adds three symbols to expand the reels. Those symbols can take the form of anything but the scorpion, spider, or dead patient.

xSplits will transform into two wilds. At the same time, it splits one symbol on each reel into two identical ones. 

xNudge wild will nudge to become fully visible and add a multiplier. 

Finally, the wild replaces other symbols and helps you form more winning lines. 

Mental Transformation

If you hit a spider symbol on the second and fourth reel, you’ll trigger the Mental Transformation feature. Then, the spider will transfer into xWays, xSplit, wild, patient, or a dead patient symbol. 

Free Spins

The Mental game has three free spins features. You can always upgrade one into the advanced mode if you land a specific combination of symbols. These modes include Autopsy., Lobotomy, and Mental free spins. 


The first free spins mode is Autopsy. It gets triggered by three scorpion symbols and rewards eight free spins. They are accompanied by a Fire Frame feature, which adds a fire frame to up to five symbols. An additional scorpion with a fire frame adds another spin. Also, you can upgrade to Lobotomy free spins if you hit a spider symbol and get an extra spin. 

During this feature, the RTP increases to 96.26%.

Mental Slot Autopsy Free Spins


You can trigger the Lobotomy free spins by hitting three scorpion and one spider symbols. This feature includes nine free spins with dead multipliers (5x, 10x, or 15x). An additional spider symbol upgrades this feature to Mental Free Spins and adds one spin. A spider and a scorpion with a fire frame also add one spin. The RTP for Lobotomy free spins is 96.17%.

Mental Lobotomy Free Spins


If you land three scorpions and two spiders simultaneously, you get the most advanced free spins. Namely, Mental free spins add ten rounds to your game, as well as increasing multipliers. A scorpion and spider symbols with a fire frame reward additional spin. The RTP during Mental free spins is 96.68%.

Mental Free Spins

Overall Impression of the Mental Slot

The Mental slot game is a horror-themed, lucrative slot game powered by NoLimit City. It’s ideal for players who enjoy dynamic, engaging casino games with a massive number of special features. However, anyone will love it since it has a tempting top prize of 66,666 times your bet. 

Mental Slot FAQ

Can I play the Mental free slot?

Yes, you can find a demo version of the Mental game at many online casinos.

Does Mental have free spins?’

The Mental slot has multiple special features, including three free spins modes. 

How much can I win in the Mental game?

The maximum winning amount is capped at 66,666 times your bet.

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