"Rich Wilde and the Tome of Madness is a cascading video slot game played on a 5x5 grid. Symbols drop down in the grid to form winning combinations. Wins are achieved by getting 4 or more symbols in a connected cluster where they touch each other horizontally and/or vertically. Winning symbols are removed, and new symbols drop in to fill up the grid. The game continues to cascade until no new winning combinations can be created."