7ds Grand Cross 35 Anniversary Box Code Work ((link)) -
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.
You can attempt at: ➡ https://game.netmarble.com/en/7dsgrandcross/coupon Enter a code like 35THBOX or 7DS35TH – you will see or "Invalid" .
Below is an extensive guide explaining how the 3.5 Anniversary Box codes work, the active code list, and step-by-step instructions on how to redeem them on Android, iOS, and PC. Every Active 3.5 Anniversary Box Code 7ds grand cross 35 anniversary box code work
A known bug during the original 3.5 launch caused the fourth code ( Peccatum1866 ) to throw a false error. If a code fails despite being spelled correctly, to refresh the server connection, then try again. Case Sensitivity & Spaces
The 3.5th Anniversary was one of the most generous periods for the game, offering massive growth materials and hero draws. During major milestone events like the 3
Unlike standard global coupon codes that are claimed via an external website browser, .
Netmarble released these sequential codes during the global 3.5th Anniversary Festival celebration to unlock hidden rewards within the inventory "Secret Boxes." If you still have these legacy promotional boxes sitting in your in-game inventory and need them to work, entering these exact phrases will grant you free development materials, SSR evolution pendants, and festival items. Every Active 3
If you still have these boxes in your inventory under the tab, follow these steps to open them: Navigate to your Item Storage . Select the 1-Use tab and find the specific anniversary box.
Tap the icon (represented by the cogwheel or smartphone icon) in the bottom right corner. Select Misc. (Miscellaneous). Tap Coupons . Select the relevant Event Coupon banner. Enter the code 7DS35TH and confirm to claim your rewards. Method 2: Netmarble Coupon Website (iOS & All Platforms)
No working code from that event exists as of April 2026.