Chaos Zero Nightmare (hereinafter referred to as Cazena) has announced a major overhaul ahead of its upcoming fourth season. Notably, this includes a complete rewrite of the main story, which faced significant criticism shortly after launch.

Super Creative unveiled the next season's update details during a live broadcast on the 7th. The most eye-catching element is the promised total revision of the main story's Act 1. Chapters 1 through 5 are being entirely rewritten, shifting the focus to better highlight the status and capabilities of the Captain within the lore. The narrative has also been polished to better align with the early technical settings regarding the Great Rift, introducing new characters and events. Furthermore, the developer has re-recorded all character voice lines to enhance player immersion.

A new combatant, 'Fae', has also made an appearance. As a Void-attribute Ranger with a background as a high-bounty fugitive, Fae gains a 120% bonus attack when the 0-cost card 'Dance of Flames' triggers the 'Flame Dance' buff. As allies draw cards, a 'Descent' buff stacks; upon reaching 8 stacks, a 0-cost card 'Falling Sky' is generated, dealing 100% damage three times. Fae will be joined by a dedicated partner, 'Luixiang', designed to maximize Fae's attack power and support card draws.

The core keyword for Season 4 was also introduced. The season revolves around 'Desire' cards, which can be acquired in designated Unidentified Zones or standard/Elite combat zones. There are five types of cards for each keyword—Possession, Exploration, Control, and Survival—which can be combined and stacked for enhancement.

Updates to bolster save data are also on the way. Using the newly added 'Resonance Core' allows players to add one common card, while the 'Mutation Core' randomly grants various additional effects, such as increasing attack power or boosting morale during follow-up attacks.

Additionally, 'Judas', 'Colossus', and 'Cravings of the Starter' will rotate in the Total War mode, and the event content 'Monster Arena' from Season 2 will make a return. The mode will feature sortie-exclusive monster cards, and the number of arenas has been reduced to alleviate the burden on players.

Other additions include an 'Environmental Variable Backup Protocol' to restore environmental variables from previous seasons. Furthermore, 'Twilight of Dimensions' has been streamlined from 10 to 8 zones, and players can now obtain up to three support effects per season. The game will also support automatic clearing for stages up to three levels lower than the highest stage reached in the previous season.

The 'Sortie' content will see the addition of 'Chaos Hack Decisive Battle'. This hidden content, accessible in Hardcore mode, can be entered by defeating rare monsters to destroy at least three Chaos Anchors. Clearing the Chaos Hack Decisive Battle provides opportunities to obtain Black Matter and Tactical Data. Additional features include Hardcore mode rankings, a sortie-exclusive achievement system called 'Engagement Data', and a 'Sortie Archive' where players can view information (Fate, cards, equipment, monsters) gathered during sortie play.

Cazena Season 4, titled 'Broken Light and Claws', begins with a pre-season on the 8th, followed by the official season launch on the 29th.