Move Under Ground

Move Under Ground is a horror novel mashup by American writer Nick Mamatas, which combines the Beat style of Jack Kerouac with the cosmic horror of H. P. Lovecraft's Cthulhu Mythos. It is available as a free download via a Creative Commons license, CC BY-NC-ND 2.5 according to the License information in the CC version of the book.
Plot summary.
Jack Kerouac witnesses the rising of R'lyeh off the California coast. With Neal Cassady and William S. Burroughs, Jack takes to the road, crossing America to save the world from a Lovecraftian cult.
Limited edition.
The limited edition hardcover includes the short story "Jitterbuggin'", an afterword, a bound-in ribbon bookmark, and a unique Lovecraftian senryū written by Mamatas. 100 copies of the limited edition were produced, and the senryū were collected as "Cthulhu Senryū" (Prime Books, 2006)
Reception.
"Move Under Ground" was widely and positively reviewed, by trade, genre, and non-genre publications. In addition to reviews in "Publishers Weekly" and "Booklist", the book received positive notices from "Fangoria", "Locus", "Green Man Review", "Bookslut", and other genre-themed publications and columns. More unusually for a first horror novel from an independent press, "Move Under Ground" was reviewed by publications more widely known for reviewing avant-garde and literary fiction, including "The Believer", "Village Voice", and the "American Book Review".
Positive word of mouth continued long after the releases of the hardcover and paperback releases. As recently as 2009, major genre publications such as Tor.com published an article on the book by novelist Jon Evans. In September 2010, Kenneth Hite declared the book one of the best Cthulhu Mythos stories not written by Lovecraft, in his book Cthulhu 101. Hite also declared the book one of the top five Mythos novels of all time via Twitter. In an October 2010 podcast and interview, author Nick Mamatas explained that his goal in writing Move Under Ground was to write a novel that would still be discussed ten years after its initial publication, referencing The Enemies of Promise by Cyril Connolly.