A compilation album originally made for various export markets, called "X∞Multiplies", a combination of remixed tracks from the Japanese mini-album "[m=45088]" and "Solid State Survivor" (which was not widely released outside of Japan). US Test pressings exist of this version titled "Solid State Survivor" but the track listing and matrixes match this compilation. Confusingly, the US compilation album was later released in Japan in 1980 (obi features the transliteration of "Multiplies" -「マルティプライズ」) and mentions in Japanese that it is a "North American Compilation". Due to this, only the US version has seen CD re-issues out of all export versions. Only the compilation releases of X∞Multiplies include the tracks "Rydeen" and "Day Tripper". Some pressings of this compilation also include the US single mix of "Tighten Up", not always noted on the sleeve or labels. Please note there is a separate master release for the original mini-album and the UK/Dutch releases (which have more tracks from the mini-album in the same mixes) and subsequent CD reissues. Please check both master releases before submission. The mini-album and UK/Dutch versions can be found under the [[master:45088]] master release.