COSM-GAME KAIJU NO. 8 THE GAME Serial Codes for September 2026
KAIJU NO. 8 THE GAME Serial Codes can provide free Dimensional Crystals and other in-game rewards through the official Web Store. Reusable public codes have appeared through anniversary broadcasts and official Special Programs, while separate one-use serials can also be distributed through events, giveaways, and product campaigns. We check official sources daily so working public codes stay current and expired codes remain separated for reference.
Codes summary
On this page
KAIJU NO. 8 THE GAME Active Codes
2 working codesCurrent reusable public Global Serial Codes are listed in the structured code section above. Public Serial Codes have primarily been distributed through official anniversary broadcasts and Special Programs, with Dimensional Crystals used as the recurring verified reward so far.
| Code | Rewards | Region | Released | Expires | Info |
|---|---|---|---|---|---|
500 Dimensional Crystals | Global | Aug 30, 2026 | Aug 29, 2027 | ||
500 Dimensional Crystals | Global | Aug 5, 2026 | Aug 4, 2027 |
Expired Codes
1 archivedExpired reusable public Serial Codes are kept separately so older anniversary and Special Program codes are not mistaken for working rewards. Individually issued event, giveaway, campaign, product, and invitation codes are not added to this public-code archive simply because they use a code-based reward system.
| Code | Rewards | Region | Released | Expired | Info |
|---|---|---|---|---|---|
500 Dimensional Crystals | Global | Jan 31, 2026 | Mar 31, 2026 |
Redemption Guide
1 platformKAIJU NO. 8 THE GAME Serial Codes are redeemed through the official KAIJU NO. 8 THE GAME Web Store. The Apple or Google account used to sign in must already be linked to the player data that should receive the reward.
Sign In.Redeem Serial Code.Code Rules & Troubleshooting
Each Serial Code can only be used once for the linked player data, and completed redemptions cannot be canceled. A code with an official redemption deadline can no longer be exchanged after that deadline passes.
If redemption fails, confirm that the Apple or Google account signed in to the Web Store is linked to the intended player data, recheck the Serial Code for typing errors, and verify that its redemption period is still open. Rewards are normally added directly to the linked player data, while items exceeding a possession limit are delivered through in-game mail.
Invitation codes and individually issued campaign, giveaway, event, or product Serial Codes use separate eligibility rules. A one-use code obtained personally from one of those routes should not be treated as a reusable public Serial Code.
New Code Announcements
Reusable public Serial Codes have appeared during official anniversary broadcasts and Special Programs. Official game news, the official X accounts, and official YouTube broadcasts are the main routes to watch for new public code strings and their redemption deadlines.
Trailer, Screenshots & Media
The existing media gallery covers the anniversary campaign, Kaiju No. 8, Defense Force characters, battle events, character progression, and official gameplay footage.
KAIJU NO. 8 THE GAME Codes FAQ
8 questionsCommon questions about redeeming KAIJU NO. 8 THE GAME codes.
Redeem Serial Codes through the official KAIJU NO. 8 THE GAME Web Store. Sign in with the Apple or Google account linked to the player data that should receive the reward.
No. The official support page states that the same Serial Code can only be used once for the linked player data.
No. A completed Serial Code redemption cannot be canceled, so confirm that the Web Store is signed in to the intended account before submitting the code.
The reward is applied to the KAIJU NO. 8 THE GAME player data linked to the Apple or Google account currently signed in to the Web Store.
The reward is normally delivered directly to the linked player data. Items that exceed the possession limit are instead delivered through the in-game mail.
Official support states that entering a Serial Code while the game is running can return the player to the title screen. Reload the game afterward so the linked player data can reflect the redemption.
No. Invitation codes belong to a separate friend-invitation system with its own eligibility and rewards. They should not be entered or cataloged as reusable public Serial Codes.
No. Some official events, giveaways, campaigns, and physical products distribute individually issued Serial Codes. Those codes can use the same Web Store redemption system without being reusable public codes suitable for this list.
Sources
12 officialCode data and redemption details are verified against these official and trusted sources.
