Three extended plays were released in support of "Cryptic Writings". Two of these featured live recordings from the ensuing tour while the other was a studio EP which featured instrumental versions of several album tracks. The live releases were entitled "Live Trax" and "Live Trax II", the first being released on June 30, 1998, while the second was released as a bonus disc to "Cryptic Writings" in 1998. An instrumental EP entitled "Cryptic Sounds: No Voices in Your Head" was released in Japan, Argentina and as a bonus disc to the album in Korea. The vocals on the tracks were replaced with extra guitar melodies, with the song "She-Wolf" being performed in a Spanish acoustic style for the first half.