Zenless Zone Zero, usually abbreviated as ZZZ, is another game by Genshin Impact developer, HoYoverse. However, unlike Honkai: Star Rail and Genshin Impact, ZZZ is set in a different universe outside the Honkaiverse. ZZZ storyline takes place in New Eridu, a futuristic metropolis where people live after surviving the apocalypse called the Hollows. This disaster generates anomalies in the dimensions and causes monsters called Ethereal to appear, creating an immense number of casualties within humanity.