Book of Ultimate Infinity

Layered on top of that modern engine sits the traditional book-slot bonus: a chosen symbol from a dusty old tome expands across full reels once free spins are triggered, giving Book of Ultimate Infinity a genuine blend of old-school and contemporary mechanics rather than just borrowing the Infinity Reels license as a gimmick.

On the numbers, the game posts a comfortably above-average 96.5% RTP alongside high volatility, and rather than a multiplier-based max win, it carries a fixed $250,000 cap on total winnings — a structure more commonly seen in games designed for large-scale, high-stake play. Stakes run from 0.20 up to 50 per spin. Getting to the free spins round does require some patience, as the volatility can produce stretches without much action before the reels start expanding meaningfully.

Symbol-wise, expect J-A card royals at the lower end, stepping up through knives, Ankhs, a queen and a gold statue toward the premium Pharaoh symbol at the top of the paytable.

For players who want the familiar book-slot free spins concept married to a genuinely different core mechanic, Book of Ultimate Infinity offers real novelty within a well-worn genre. The combination of high RTP and a capped dollar-value ceiling makes it a distinctive option worth exploring.

Ready to see how far the reels can expand? Try Book of Ultimate Infinity for free in demo mode at johnessyslots before chasing that $250,000 cap for real.