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7DS Grand Cross Codes December 2025: The ULTIMATE List Of 6+ Active Coupon Codes For FREE Diamonds & UR Pendants

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Are you a Knight of Britannia looking for a massive boost to your account? As of December 19, 2025, the hunt for active The Seven Deadly Sins: Grand Cross codes is on, fueled by recent major updates and holiday events. These codes, officially released by developer Netmarble, are your golden ticket to snagging essential in-game currencies and rare materials like Diamonds, SSR Pendants, and valuable Upgrade Materials, ensuring your favorite heroes like Meliodas, Elizabeth, and Escanor are always battle-ready.

This comprehensive guide provides the freshest, most up-to-date list of working 7DS Grand Cross coupon codes, straight from the latest Global Server announcements. Whether you're a new player just starting out or a veteran participating in the 5th Anniversary festivities, using these codes is the fastest, easiest way to claim free rewards and stay competitive in the Grand Cross world. Don't let these limited-time offers expire—redeem them immediately!

The Complete List of Active 7DS Grand Cross Codes (December 2025)

The following codes are confirmed to be active and working for December 2025. Be sure to enter them exactly as written, as they are case-sensitive. The rewards are typically delivered to your in-game Mailbox immediately after successful redemption.

  • 7DSTGS2025 - Redeem for a package of free, exclusive rewards related to the current season.
  • 7DSGCx7DSI - Claim a highly sought-after UR Pendant, crucial for Limit Breaking your strongest heroes.
  • DESSERTS - Use this code to receive a variety of free rewards and consumables.
  • STRESSED - A popular code granting free rewards to ease the grind, often including Gold and materials.
  • LIGHTNDARK - Tied to a recent major event, this code typically grants a gift package that includes Diamonds and various Upgrade Materials.
  • Calliope5thANNIV - Redeem this code for a reward of 10 Diamonds, celebrating the game’s milestone anniversary.

Note on Expiry: Coupon codes in 7DS Grand Cross often expire quickly, especially those tied to specific events or collaborations. If a code fails to work, it has likely expired or has already been used on your account. We recommend checking back frequently for new codes, particularly around major game updates like the upcoming 2026 New Year Festival OST event.

How to Redeem Your 7DS Grand Cross Coupon Codes

Redeeming codes in The Seven Deadly Sins: Grand Cross is handled differently depending on your device, specifically for iOS users who must use the official Netmarble website. Follow the instructions below for your specific platform.

Method 1: In-Game Redemption (Android & PC)

This is the simplest method and works directly within the game client for Android and PC players.

  1. Launch the 7DS Grand Cross app on your device.
  2. Ensure you have completed the initial game tutorial.
  3. From the main screen, tap the 'Settings' (Cogwheel) icon located in the lower-right corner.
  4. In the menu that appears, look for and select the 'Coupon' or 'Redeem Code' option.
  5. A pop-up window will appear. Carefully type or paste one of the active codes from the list above (e.g., 7DSGCx7DSI).
  6. Tap 'Confirm' or 'Redeem'. Your rewards will be instantly sent to your in-game Mailbox.

Method 2: Netmarble Coupon Website (iOS & Alternative)

Due to platform restrictions, iOS users must use the official Netmarble coupon registration page. This method also works for Android and PC players as an alternative.

  1. Visit the official Netmarble Coupon Register Page for The Seven Deadly Sins: Grand Cross in your web browser.
  2. You will need to enter your Netmarble ID (or Player ID). This can be found in the game’s Settings menu.
  3. Select the appropriate event or hero (e.g., "Escanor" or the current major event) from the list, if prompted.
  4. Enter the desired Coupon Code into the designated field.
  5. Click 'Register'.
  6. Now, relaunch the 7DS Grand Cross game. The rewards will be delivered to your in-game Mailbox.

Maximizing Your Rewards: Essential Tips for Knights

To ensure you get the most value out of every coupon code and free reward, keep these key strategies in mind. Mastering the flow of free resources is essential for progressing beyond the early game and competing in high-level content like the Final Boss battles and PVP.

Understanding Code Limitations and Expiry

Every single code is a one-time use per account. Once you redeem a code, it cannot be used again, even if you switch devices or servers. This is why it’s critical to use the codes for the most valuable items first, such as the UR Pendants and large bundles of Diamonds, which are the premium currency used for summoning new heroes (Gacha pulls).

Focusing Your Diamond Spending

The free Diamonds you earn from these codes should be strategically saved for specific, limited-time banners. The game frequently features powerful Festival Heroes or collaboration units that offer a massive power spike. Resist the urge to spend on every banner and save your stash for these meta-defining characters to maximize your account’s potential.

Utilizing Upgrade Materials

Codes often grant generous amounts of Upgrade Materials, including Gold, Awakening Materials, and various Demon Parts. Use these resources to immediately level up and Super Awaken your main team. A well-invested team is far more powerful than a large roster of under-leveled heroes. Pay close attention to the SSR and LR Coins you receive, as these are vital for purchasing high-value items in the Coin Shop.

Staying Updated with Netmarble Notices

The best way to get new codes is directly from the source. Follow Netmarble’s official community forums and social media channels. They frequently announce new codes during maintenance periods, live streams, and major in-game events like the recent 5th Anniversary celebration and the creation of the 2026 New Year Festival OST. Staying engaged with the community ensures you never miss a free reward.

7DS Grand Cross Codes December 2025: The ULTIMATE List of 6+ Active Coupon Codes for FREE Diamonds & UR Pendants
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