Adrien Begrand of PopMatters describes it as "One of the coolest ideas for an album in a long time, Grohl has put together a record that not only serves as a sincere tribute to the metal and hardcore bands of his youth, but features all his favorite vocalists as well." He gave a favorable review but heavily discussed Grohl's guitar skills and songwriting as lacking: "The biggest problem on the album is Grohl's complete lack of inventiveness as a guitar player. . . Had Dave Grohl used more guest musicians instead of trying to do everything himself, "Probot" would have been much better." Despite these criticisms, Begrand considers it "impossible not to like this album, mistakes and all."