Set in a dreary mental asylum, NoLimit City Gaming has produced an incredible online slot that definitely lives up to its name. Mental slot features a chance to win up to 66666x your stake, up to an insane 108-billion+ ways to win, five reels, and unique bonus features such as Dead Patients. This slot also includes Enhancer Cells and Transforming symbols, of course, a Free Spins Feature and not to mention the insane graphics that help the game truly come to life.
**100% Deposit Offer up to £150 and 50 Free Spins on Book of Dead **
Full T&Cs apply. New player only. 7 days to claim offer and deposit a min of £10 with a further 7 days to wager 35x. Cash stakes only and wagering contributions vary. Max reward £150. 50 wager-free spins 0.10p each on Book of Dead awarded after wagering complete, winnings paid as cash. 3 day expiry.