Box Code Work | 7ds Grand Cross 35 Anniversary

If you have recently acquired a code—or are considering buying one—you need to know the expiration dates, regional locks, redemption steps, and common error fixes. Below, we break down everything you need to know to ensure your code works today.

The stands out as one of the most memorable milestones in Netmarble’s The Seven Deadly Sins: Grand Cross history. Aside from introducing powerhouse units and massive gem giveaways, the celebration popularised a unique reward mechanic: Hawk & Oslo’s Secret Box .

To open the 3.5 Anniversary Secret Boxes The Seven Deadly Sins: Grand Cross

: Go to the 1-Drop tab and tap on the locked 3.5 Anniversary Box. 7ds grand cross 35 anniversary box code work

⚠️ These codes often expire 6–12 months after the box’s release. As of 2026, most 3.5 Anniversary codes are likely dead unless unused ones are found from unopened boxes.

: A known bug occasionally flags the 4th code ( Peccatum1866 ) as invalid on the first try. If this happens, completely close and restart the game client , reload your inventory, and try again.

The redemption process varies slightly depending on your gaming platform. For Android and PC Client Users Open . Tap the Menu icon in the bottom right corner. Click on the Misc button. Select Coupons . If you have recently acquired a code—or are

The 3.5-Year Anniversary is a massive milestone in the game, bringing exclusive heroes, huge login bonuses, and, most importantly, the highly anticipated Special Secret Box Event .

While the specific "35th Anniversary" likely refers to the 3.5th Anniversary Ultimate Festival

Huge thanks to the devs for sorting out the issues. Happy summoning, everyone! Good luck with your pulls! 🍀🔥 Aside from introducing powerhouse units and massive gem

The most frequent roadblock is entering codes out of sequence. Code number four ( Peccatum1866 ) will fail if it is typed into Box Three. Always ensure you are matching the password to the exact numeral designation of the box currently sitting in your item storage. 2. Capitalization and Syntax Errors

During major milestone events like the 3.5th Anniversary (which celebrated the Ultimate Escanor festival banner), Netmarble sent physical "Secret Boxes" directly to players' in-game mailboxes.

In late 2022 and early 2023, Netmarble sold a limited-time (physical merchandise). Inside the box, players found:

(Used for the special summon banner)