Galactic Disaster Seasons
Chaos Zero Nightmare rolls out its major content as a series called Galactic Disaster. Each season opens a time-limited Chaos zone, new combatant(s)/partner(s), and mechanics used only during that season. This page lists all 4 known seasons plus a full breakdown of the current Season 4.
Galactic Disaster is the game's seasonal event system — each run lasts several weeks, opens a new Chaos zone tied to the season's story, usually adds 1-2 limited combatants/partners, and introduces mechanics used only during that season.
Galactic Disaster
| Season | Name | Chaos zone | Weakness | Note | Status |
|---|---|---|---|---|---|
| Season 1 | Forbidden Catalyst | Laboratory 0 | Void | Season 1's patch notes detailed the Save Data scoring system. | Past |
| Season 2 | Seed of Karmic Fire | Burning Life | Order | — | Past |
| Season 3 | A Song Rippling Through the Stars | Theater of Illusion | Passion | This season's Chaos zone boss has not been announced. | Past |
| Season 4 | Shattered Light and Claw | Kaleidoscope Hatchery | Not yet announced | Launched 07/29/2026 — full breakdown below. | Ongoing |
Season 4 — Shattered Light and Claw
Season 4 rolled out in two waves: a pre-season starting 07/08/2026 and Phase 1 starting 07/29/2026.
Pre-season — 07/08/2026
Before Season 4 proper, the 07/08/2026 pre-season update brought a new combatant, new mechanics, and an overhaul of several older systems.
Basin of Hyperspace got an overhaul: a new Support Effect system lets you pick 3 effects per run; floor count dropped to 8, with the final floor made harder but far more rewarding.
| Support effect | Detail |
|---|---|
| Draw | +30% Void damage. Draw 3 cards in a turn → +50% damage on 0-cost cards for the next 2 turns. |
| Play basic cards | +30% Passion damage. Play 3 basic cards in a turn → +50% damage on basic-attack cards for the next 2 turns. |
| Discard | +15% attack-card damage. Discard 4 cards in a turn → +35% attack-card damage for the next 2 turns. |
Coming after Hilde
Per the announced schedule, Olga and then Arabella will launch after Hilde, roughly 3 weeks apart — the publisher has NOT announced exact dates.
Euphina is also listed among unreleased characters, but is NOT part of Season 4 — which season she'll join is currently unknown.
Season 4 dates and content are compiled from the game's patch notes plus cross-checking multiple community wikis (sources not named here). The terms Ionization, Fracture, Zero In, and Homing Arrow currently only appear on community pages — the publisher has NOT officially confirmed these exact names.
See also
Quick FAQ
Season 4 is called Shattered Light and Claw. The pre-season opened 07/08/2026, and Phase 1 (Hilde, Eunie, the Kaleidoscope Hatchery Chaos zone) opened 07/29/2026 — this is officially confirmed.
No. Chizuru and Itsuku rerun from 08/08 to 09/01/2026 but use a SEPARATE pity counter from the Hilde/Eunie banner.
Per the announced schedule: Olga, then Arabella, roughly 3 weeks apart — no exact dates yet. Euphina hasn't launched either, but isn't part of Season 4.
Partially, yes: season-limited combatants get periodic reruns — for example Chizuru and Itsuku rerun 08/08–09/01/2026, and Yuki and Westmacott rerun alongside Fei/Ruixiang. The Backup Protocol System also re-enables previous seasons' Environment Variables inside the current season's Chaos zone. Whether a season's own story chapter or limited event can be replayed after it ends is not disclosed in available sources.