Chaos Zero Nightmare Season 5 Launches October 21
Smilegate says the 'A Promise in the Snow' update arrives October 21, 2026, with anniversary events and a new Striker, Lostvais (Rosseweise).
Smilegate announced that Chaos Zero Nightmare's Galactic Disaster Season 5, titled 'A Promise in the Snow', will launch on October 21, 2026, according to automaton-media.com. The update doubles as the game's first-anniversary celebration, with events including a Nightmare Festival and Nightmare Dream Park.
The new playable character is Lostvais (Rosseweise), a Justice-attribute Striker, accompanied by her partner Sig. Smilegate also announced two further characters on the way: Bravebel, described as the first fighter of the Shireima faction, and Dalia, who combines cards.
The season's story unfolds on the polar planet Nivalis, with races gathered on the giant ark stage Front Nova for the Nightmare Festival under the banner Stella Familia. Heaven's Rampart, the Chaos domain of Diaros, serves as another setting, with a judgment agent boss encountered there.
Co-op mode planned for December
Smilegate also outlined the game's first multiplayer content: 'Joint Operation - Core Break', a two-player co-op mode, is planned for release in December 2026.
Chaos Zero Nightmare is developed by SUPER CREATIVE and published by Smilegate. It was released in October 2025, and a Chapter 0 preview of Season 5 was released in September 2025.
Quick answers
When does Chaos Zero Nightmare Season 5 launch?
Smilegate announced that Galactic Disaster Season 5, 'A Promise in the Snow', launches on October 21, 2026.
What new characters are coming to Chaos Zero Nightmare?
Lostvais (Rosseweise), a Justice-attribute Striker with her partner Sig, plus upcoming characters Bravebel and Dalia.
When is the Chaos Zero Nightmare co-op mode out?
The first multiplayer content, 'Joint Operation - Core Break', a two-player co-op mode, is planned for December 2026.