Chaos Zero Nightmare 1st Anniversary: All Events and Rewards

The Chaos Zero Nightmare 1st Anniversary celebration, Nightmare Carnival, kicks off with the October 21, 2026 update, one day before the game turns one on October 22. Smilegate has revealed a full event calendar packed with a 5★ Combatant & Partner Selection Ticket, 1,600 Crystals, 70 free Normal Rescues, a new idle theme park event and the start of Season 5. At gamemarket.gg, we gathered every upcoming anniversary event, its rewards and its dates so you can plan the Carnival from day one.

Nightmare Carnival at a Glance

• Update: October 21, 2026
• 1st Anniversary: October 22, 2026
• New Season: Galactic Disaster Season 5: A Promise Upon the Snow
• New limited Combatant: Rossweisse, a 5★ Justice Striker
• Free rewards: 5★ Combatant & Partner Selection Ticket, 1,600 Crystals, 70 free Normal Rescues and more
• Note: the official calendar says event dates and rewards may change

Every Anniversary Event in the Game

Nightmare Carnival Countdown Check-In

The countdown check-in is already running ahead of the update and wraps up around October 21. Log in before it ends to collect every reward.

Nightmare Carnival: Carnival Welcome Gift

The headline reward of the anniversary, running from the October 21 update until December 2:

• 5★ Combatant & Partner Selection Ticket
• 1,600 Crystals, plus more rewards

Carnival Check-In

A login event that runs alongside the Welcome Gift and rewards:

• 10 Signal Amplification Anchors
• 20 Rescue Anchors

70 Free Normal Rescues

You get 10 free Normal Rescues per day for 7 days during the event period, for a total of 70.

Special Unigram

A limited Renoa Sticker for your Unigram.

Nightmare Dream Park

A new idle theme park event that starts with the update and runs until December 23. You build attractions and assign managers to them to earn revenue. Rewards are reported to include Crystals, growth materials, limited Combatant stickers and selection cores.

Additional Aether

The Garden Cafe gives an extra 40 Aether per day for a limited time after the update, which makes it a good moment to check in on the cafe daily. If you remember how the summer event worked, the Beach Cafe Festival guide is a quick refresher on cafe-based rewards.

Community Events

The calendar also lists several events outside the game, which usually run through official social channels:

• 1st Anniversary Retrospective Event with a 1st Anniversary Merch Kit
• 1st Anniversary Puzzle Event
• Daily Login Rewards Event
• Rossweisse Community Event
• Gift from the Operations Team
• Rossweisse Digital Merch Pack, including a live interactive wallpaper
• Rossweisse MMD Model release on anniversary day

Check the official community pages for how to join each one.

New Combatant: Rossweisse

Rossweisse is the new limited 5★ Justice Striker and the face of Season 5. Her kit is built around a new Light and Dark card system, where certain cards switch between Light and Dark forms and can combine into stronger attacks. Her partner, Sig, also joins with the update.

Her banner is reported to run from October 21 to December 2. Two more Combatants were revealed at the anniversary showcase:

• Blazebell, a Justice Controller who supports allies with fire, expected around November 11
• Dahlia, who binds cards with different effects into stronger ones, expected around December 2

Season 5: A Promise Upon the Snow

Galactic Disaster Season 5 begins with the update. The story moves to Nivalis, a frozen planet where the ark Frontnova has crashed, and introduces new enemies, cards, gear and the judgment agent Waltraute. If you need a reminder of where the story left off, our Season 4 reveal coverage covers the previous chapter.

Free Anniversary Code

The code NIGHTMARECARNIVAL is reported to give 1,000 Crystals and to stay active until November 9, 2026. Redeem it early in case it expires sooner.

System Changes Coming With the Update

• Great Rift splits into Subjugation Battle and Merit Battle
• a new battle speed option for faster runs
• Exploration Passives for Partners
• Memory Fragment crafting and a Reconfiguration option to reroll values
• a two-player co-op mode, Joint Operation: Core Break, planned for December

Players who skipped the last few patches can check the Olga and Fracture Loop update guide to catch up before Season 5.

Your Nightmare Carnival Checklist

1. Finish the Countdown Check-In before October 21.
2. Claim the Welcome Gift and pick your 5★ Combatant and Partner before December 2.
3. Log in for 7 days to collect all 70 free Normal Rescues.
4. Start Nightmare Dream Park early, since it runs until December 23.
5. Redeem NIGHTMARECARNIVAL before November 9.

Chaos Zero Nightmare's first anniversary gives every player a selection ticket, free rescues and a fresh season to dive into. Log in on October 21, pick your rewards wisely and enjoy the Carnival.

If you want an account with more Combatants already unlocked, you can explore trusted Chaos Zero Nightmare Accounts, keep your check-ins and Dream Park progress on track with reliable Chaos Zero Nightmare Hourly Services, or clear tough Season 5 content faster through dependable Chaos Zero Nightmare Boosting.

GameMarket.gg is a trusted digital marketplace for everything gaming-related. We serve the gaming community by providing secure access that enhances every gaming journey.