Mental Review Hacksaw Gaming
RTP: 96.00% | Volatility: Extreme | Max Win: x50,000 | Mechanic: Feature Buy
For every £100 wagered, this slot returns an average of £96.00 over a statistically significant number of spins. At 96% average market RTP, Mental is at market average for UK slots.
Mental — Full Review
Mental is a Hacksaw Gaming extreme-volatility slot with a dark psychological theme. Features include a Straight Jacket Free Spins round and an expanding grid mechanic. Strong following among high-volatility slot players.
Mechanic: Feature Buy
Mental uses the Feature Buy mechanic — one of the defining features of this title's volatility profile and win distribution. This mechanic type tends toward larger but less frequent wins.
Buy Bonus
Buy Bonus is available on Mental at supported UK operators. The feature allows you to purchase entry into the bonus round directly at a fixed multiple of your stake — typically 50–200x. Note that Buy Bonus is restricted during bonus play at all UKGC-licensed operators under UKGC rules.
Where to Play Mental in the UK
Mental is available at UKGC-licensed UK casino sites. The best current sites for Hacksaw Gaming content are Casumo (3,000+ slots, strongest independent catalogue) and Ladbrokes (2,000+ slots, fastest withdrawals). All sites below are UKGC licensed with honest 10x or below wagering requirements.
Related Categories
Hacksaw Gaming Slots · Extreme Volatility Slots · Best RTP Slots 96%+ · Slots with 10,000x+ Max Win · Buy Bonus Slots
Best UK Slot Sites 2026
Ranked by slots catalogue, avg RTP, bonus EV & withdrawal speed. All UKGC licensed. Updated May 2026.
| Casino | Rating | Welcome Bonus | Slots | Avg RTP | Wagering | Bonus EV | |
|---|---|---|---|---|---|---|---|
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18+ | BeGambleAware.org | T&Cs apply
18+ | BeGambleAware.org | T&Cs apply
18+ | BeGambleAware.org | T&Cs apply
18+ | BeGambleAware.org | T&Cs apply
18+ | BeGambleAware.org | T&Cs apply
18+ | BeGambleAware.org | T&Cs apply
18+ | BeGambleAware.org | T&Cs apply
18+ | BeGambleAware.org | T&Cs apply
18+ | BeGambleAware.org | T&Cs apply
18+ | BeGambleAware.org | T&Cs apply
Affiliate Disclosure: We earn commission from some operators. This does not affect rankings. Bonus EV = Bonus − (Wagering × Bonus × 0.04). 18+ only. UKGC licensed. BeGambleAware.org