The Guessing Game is the ninth studio album by British doom metal band Cathedral, released on 26 March 2010 through Nuclear Blast Records.

[9] Describing the album as Cathedral's "magnum opus", Phil Freeman wrote for AllMusic that The Guessing Game offered the "most psychedelic, progressive material in the band's entire catalog".

[2] Writing in The Guardian, Jamie Thomson praised the "fine balance between their monolithic guitar groove and a more heady blend of prog, folk, psychedelia and even the occasional burst of Bonzo Dog Band-style jazz whimsy...these sparkling sojourns to the outer fringes of 70s rock would cheer even the most jaded metaller.

[7] Noting the frequency with which the double-album format suffers from bloat, Invisible Oranges' Chris Rowella praised Cathedral for coming "damned...close" to perfecting the model.

George Pacheco wrote for About.com that The Guessing Game is a "confounding conundrum of an album both forward-thinking and stagnant-sounding at the same time".