Rich Wilde and the Tome of Madness moves the explorer onto a 5×5 cascading grid. Four touching matching symbols form a cluster; wins charge a portal. After 42 winning symbols have been collected, the portal opens an Other World free round with a sequence of grid effects.
Eye marks in Other World can unlock a moving Cthulhu Mega Wild when all are opened. The Tome itself is a Special Wild. The related Tome of Madness Bingo keeps the story but has numbered cards and pattern prizes, so its rules must not be borrowed for this slot.
Related games
Compare Tome of Madness Bingo and GEMiX for a different rule set.
Source: Play'n GO game information.
