How to redeem Chaos Zero Nightmare codes

Redeem on PC or Android

Use the account that holds your game character.

Access to the menu and mailbox depends on account progression; the exact fixed story gate is not established consistently by the reviewed sources.

1. On PC or Android, open Settings using the gear icon.
2. Open Account Settings, shown as a silhouette/account icon in the illustrated guides.
3. Choose Register Coupon.
4. Paste the code and confirm with OK.
5. Open the in-game mailbox and claim the coupon reward message.

iOS or external-browser redemption

1. Open the official Coupon Registration page in Safari, Chrome or another external browser.
2. Choose Login to STOVE to Register Coupon, using the same account/login method as the game.
3. Enter the coupon code and select Register.
4. Return to the game, open Mail, select the coupon reward message and claim it.

If a code is not accepted

Copy the code exactly as published, including capitalization, punctuation and spaces. Check whether your account has already used it and read any requirement shown in the game.

A code can expire or be restricted to an event, account, region or platform. The reports on this site are not successful in-game tests; compare the linked sources when availability or rewards disagree.