Their early albums were almost entirely acoustic but with later releases their sound became more electric. In 1977 they released their first album 1313 on which the members played with a heavy rock and roll approach despite the fact that the instrumentation was largely acoustic. This is mostly due to the use of drums. Two years later the album Heresie proved to be even darker. Several reviews have cited it as the darkest album ever recorded.
Subsequent albums lightened the sound only slightly, but became ever more electric. Whereas early albums featured oboes, spinets, harmoniums and mellotrons their 1980s albums tended to rely more on synthesizer and electric guitar. Despite these changes their overall sound remained fairly consistent.
The group disbanded in 1987, but reformed in 1999. In the interim drummer Daniel Denis released two solo albums and joined Art Zoyd, a similar band from France. Since 1999, Univers Zéro have released three albums.
Other than the above mentioned Art Zoyd there are not many similar groups. Some that are remotely similar include Present (a UZ offshoot), Apocalyptica (more heavy metal influenced), Bohren & der Club of Gore (more jazzy), After Crying and Rachel's (both of which are much lighter in tone).