Book of Dead Slot by Play'n GO

Before the 10 free spins start, the Book opens and picks one symbol at random. That symbol becomes the Special Expanding Symbol for the entire round. When it lands on a reel and contributes to a win, it stretches to fill all three positions on that reel. The critical detail: wins from expanded symbols do not require adjacent reels. If Rich Wilde gets selected and lands on reels 1, 3, and 5, all three expand, and the game evaluates every payline with those filled reels. Rich Wilde pays 500x per line across 10 lines. That non-adjacent logic is the whole reason the 5,000x ceiling exists.

Getting there requires three or more golden Book symbols, which pull double duty as both Wild and Scatter. Three Books pay 2x your total bet and trigger the bonus. Four pay 20x. Five pay 200x plus the free spins on top. During the round, landing three more Books adds another 10 spins with no retrigger cap. Same special symbol stays. The selection is random each time you enter the bonus, so one session gives you Rich Wilde (the highest-paying symbol) and the next gives you a card royal worth a fraction of that. Binary outcomes on top of binary outcomes.

Sandstone pillars and golden symbols against a dark tomb backdrop. The base game runs a slow percussive beat that shifts into orchestral swells once free spins activate - the audio does a lot of work selling the tension during that symbol selection moment. The 10 paylines are adjustable, which lets you bet on fewer lines per spin if you want larger individual line wins at the cost of coverage. A gamble option after any base game win offers a color pick to double or a suit pick to quadruple, up to five consecutive guesses with a 2,500-coin cap.

Book of Dead is the third game in the Rich Wilde series, following Aztec Idols and Pearls of India. The franchise has since branched into Tome of Madness, Shield of Athena, Amulet of Dead, and Cat Wilde's own spin-off line. Amulet of Dead added multipliers to the expanding symbol formula. Legacy of Dead, not officially part of the series, addressed the biggest complaint about this game by letting retriggers unlock additional expanding symbols instead of locking you into one for the whole bonus.