Cell-0 (pronounced "Cell Zero"[11]) is the ninth studio album by Finnish cello metal band Apocalyptica.

[11] It was self-produced by the band and conceived without a label behind it, resulting in more creative freedom, which led cellist Perttu Kivilaakso to notice some progressive elements in their music, specially on the song "Fire & Ice", which begins with Celtic melodies performed by Nightwish flutist Troy Donockley and ends with riffs that he described as "chaotic" and "complex".

[1] On 3 June 2019, the band announced they had completed work on the album, with recording lasting for three months at Sonic Pump Studios, in Helsinki.

[12] Later that month, they announced their signing to Silver Lining Music, through which they would release the yet-to-announce studio effort.

[14] On 3 October, the band announced the album's title, cover art and release date.

They commented that "it is tough to express without lyrics, but in Cell-0, we found particles of our universe previously unknown to us.

"[3][4] On the same day, they released a video for the album opener "Ashes of the Modern World", directed by Ville Juurikkala.

[3][4] On 1 November, they released a video for "Rise", directed by Lisa Mann in collaboration with cinematographer Jason George and meant to depict a live impressionistic painting.

[5] On 12 December, another video was released, this time for "En Route to Mayhem", which discuses humans' actions towards life on the planet.