Mental

Figures as Nolimit City publishes them, checked on November 3, 2026.

Slots that share what makes Mental what it is, in Spin Score order, at most two per provider. Mental itself is scored in the spec sheet above. Spin Score = 40% RTP, 15% max win, 30% free spins round, 15% base game. How we score

Demo buttons open the free-play version on the game studio’s own site: no deposit, no account. We are not paid for them. How we make money

The base grid is 5 reels with 3 to 5 rows and 108 ways. That number moves around a lot.

Fire Frames are the main engine. Fire Frames split the symbols inside them, and every split adds ways to the spin. Our record says this happens on most spins. Then there are Dead Patient symbols. Land two of them and they reveal multipliers, and those multipliers can be large.

Put together, the base game earns a 7 from our editors. It's busy. It also means the screen often looks promising and pays very little, which is how a 'Insane' volatility game keeps you watching.

Nolimit lists a hit frequency of 34.19%. About one spin in three returns something. Most of those returns are smaller than the stake.

Max bet is 70 per spin on the provider's page, against 100 on Mental 2.

Mental has three free spins rounds, and each escalates the same features rather than adding new ones.

In free spins, Dead Patient multipliers transfer to new patient symbols, so a good multiplier can keep working. The top tier adds the important part: the multiplier count can't drop. That's where the ceiling lives.

Our editors score the bonus a 9. It's a deep, well-built round. It's also a round where most results are modest, because the large multipliers need the right symbols around them to be worth anything.

One warning about Nolimit's own page. Its long summary text for Mental describes a different game (Das xBoot) by mistake. We've ignored that text. If you read it and get confused, that's why.

Where the casino and jurisdiction allow it, you can buy straight into each free spins tier: 80x, 200x or 1,000x the bet. There's also a 220x lucky draw that gives a random tier.

Bigwinboard says the feature RTP rises to a maximum of 96.47% when buying, a bit above the base 96.08%. That doesn't make it a good deal. It's still a negative expected value, and at 1,000x per buy a budget disappears very quickly.

I'd skip the buys outright. If you want to see what the top tier does, the free demo shows it for nothing. Our bonus buy slots page explains the trade-off in more detail.

Nolimit City's page shows one figure, 96.08%. Bigwinboard lists a second setting at 94.20%. The casino picks, and the game looks the same at both.

Check the info screen before you play. At 94.20% you're paying almost two points more per spin, on average, for an identical game.

And with a game this volatile, the RTP tells you even less about a single session than usual. A 66,666x ceiling at 1 in 18 million is part of the 96.08%. Take the rare giant wins out and the return on everyday play is lower. Our RTP guide walks through why.

On paper, Mental 2. It scores 8.3 to Mental's 8.1, and it wins on exactly one factor: the base game, 8 against 7. Fire Reels and Enhancer Cells (which add wilds, xSplits and xNudge wilds) give it more going on per spin, and its 99,999x max win can land in the base game. Both max out our ceiling factor, both score 9 for free spins, and the RTPs are almost the same: 96.06% for the sequel, 96.08% for the original.

The catch is the settings. Mental has two known versions, 96.08% and 94.20%. Mental 2 has five per Bigwinboard: 96.06%, 95.23%, 94.04%, 92.02% and 84.01%.

So here's how I'd choose. Open Mental 2's info screen at your casino. If it says 96.06%, play the sequel; it's the better game. If it says 94.04% or lower, the original is the better deal at either of its settings, because even Mental's 94.20% beats three of the sequel's five versions.

Both are the extreme end of the market. Neither is a sensible first slot.

Mental suits experienced players who know what 'Insane' volatility does to a balance, set a strict budget first, and want a base game that keeps doing things. It's a poor choice for anyone new to slots, anyone playing on a small balance, or anyone hoping to win money back. That last one is never a good reason to spin.

If it's too much, Wanted Dead or a Wild is still high volatility but rated a step lower by its studio. The high volatility ranking and our Nolimit City page go further. If you're worried about how much you're playing, our responsible gambling guide lists where to get help.