Seven Deadly Sins Code Guide
Hey folks — I’m your average player in the world of The Seven Deadly Sins: Grand Cross and The Seven Deadly Sins: Idle Adventure (both under the umbrella of the “Seven Deadly Sins” games by Netmarble). I’ve spent plenty of time digging through redeem-codes, coupon pages, and fending off that “Invalid code” message — so I figured I’d share everything I’ve learned about how the codes work, how to grab them, what rewards they give, and how to avoid the gotchas.
A. Overview of code system and features
In both of the Seven Deadly Sins games, “codes” or “coupon codes” are essentially free reward keys dropped by Netmarble (and sometimes via events, social media, collabs). You input one of these codes, and you get in-game goodies: diamonds, hero tickets, evolution items, etc. They’re a nice boost especially when you’re early game or trying to stay F2P.
B. Game versions (Grand Cross, Idle)
Grand Cross: The more narrative, turn-based, highly animated version of the Sins world.
Idle Adventure: More of the casual/auto-play side, ideal for players who like weaker time investment.
Important: Codes are not always cross-usable between these versions. A code for Idle may not work on Grand Cross and vice-versa.
C. Code purposes and rewards
Why even bother with codes? Simple: they give you resources that otherwise take time (or money) — free diamonds/gems, summon tickets, evolution materials, etc. Especially for early progress, they’re gold. Some codes = SSR evolution items, some = hundreds of diamonds.
D. Developer (Netmarble) information
Netmarble runs the games, posts the codes, controls the coupon sites. They also place region-locks and expiry conditions. So you’ll want to be aware of your server/region settings.
E. Community and player base overview
There’s a lively community around Sins codes: Reddit threads, forums, YouTube tutorials, etc. Players often share codes as soon as they drop. That’s how I first found mine.
Code Types and Categories
Alright, let’s talk code kinds, because they aren’t all the same and knowing which type you’re dealing with helps.
A. Redeem codes overview
“Redeem codes” or “coupon codes” are alphanumeric strings you enter in a redemption UI (in-game or via a website) to claim rewards.
B. Coupon code system
This is often the label used by Netmarble: go to the “Coupon” or “Redeem” screen and paste the code. The official Netmarble coupon page is here: Netmarble Coupon Page for Grand Cross.
C. Gift code explanation
Sometimes these codes are “gift codes” given for celebrations/collabs/anniversaries. They might be region-specific. Example: “5thfesta” code for 5 Super Awakening Coins in Grand Cross.
D. Different code types
Free-reward codes: give modest stuff (few diamonds, summon tickets)
Big event codes: heavy rewards (SSR pendants, large diamond packets)
Region-/server-specific codes: only valid in certain locales
Time-limited codes: expire after date or limited use
E. Reward classification guide
Meeting the type helps manage expectations:
Diamonds/Gems → immediate currency boost
Summon tickets → get new heroes
Evolution materials → gear your heroes for end game
Misc resources → XP boosts, stamina potions, etc
Active and Working Codes
Okay, here’s where the fun is: codes you can actually use (while valid) + how to know they work.
A. Active codes list 2025
Here are some current / recently working codes (be sure to try quickly — they may expire):
For Grand Cross:
7DSGCx7DSI→ one UR PendantSTRESSED→ free reward (e.g., diamonds)DESSERTS→ 3 SSR Pendants (recently)Calliope5thANNIV→ 10 DiamondsPDKOO2025GIFT→ 30 Diamonds + 10 Super Awakening Coins
For Idle Adventure:1STDEVLETTER→ 10,000 DiamondsBLESSFROM7DS→ rewardsIDLEBREEZEGIFT→ rewards
B. Working codes guide
Always type exactly (caps matter).
Don’t include spaces unless shown.
If “Invalid code”, it may be expired, region-blocked, or you made a typo.
C. Free codes availability
Yes, the game regularly gives free codes. Anniversary, collabs, milestone events. Staying on socials helps.
D. New codes announcement
Often via Netmarble’s Twitter/X, Facebook page, in-game banners. Some YouTube creators also drop “just released” codes.
E. Latest codes release
As of Oct 2025 some of the codes above were still active. But like always — once redeemed or expired, they vanish. Bookmark lists.
Grand Cross Codes
Let’s zoom in specifically on Grand Cross (since many players focus there).
A. Grand Cross codes overview
The Grand Cross version uses the classic coupon system: you complete tutorial, then menu → Misc → Coupons. Then input code. Several sites maintain lists of “working codes vs expired”.
B. Grand Cross active codes
From lists above: 7DSGCx7DSI, STRESSED, DESSERTS, PDKOO2025GIFT, etc. Readers note: some codes like SUPERNOVA offered ~50 Diamonds.
C. Grand Cross code list
Here’s a sample consolidated list:
7DSGCx7DSI — UR Pendant
STRESSED — free reward
DESSERTS — 3 SSR Pendants
Calliope5thANNIV — 10 Diamonds
7DSGBHAKOS — 10 Diamonds
FLAREMAEL — 10 Diamonds
PDKOO2025GIFT — 30 Diamonds + 10 Super Awakening Coins
7DS4K — 50 Diamonds
NEWSTORY — 50 SSR Evolution Pendants
7DSROYAL — 10 Diamonds
And more. (Check community lists for updates).
D. Grand Cross reward types
When you redeem a code in Grand Cross, expect items like: diamonds (summon currency), Super Awakening Coins (late-game enhancement), SSR Evolution Pendants (for evolving high-rarity heroes), etc. These help you progress faster.
E. Grand Cross redemption guide
Step-by-step (as many sites describe):
Launch the game, complete tutorial.
Tap Menu (cogwheel) → Misc → Coupons.
Enter your Netmarble ID (if required) and code.
Press Use/Confirm.
Rewards will appear in your in-game mailbox / inbox.
One tip: Check region (server) — codes often region-locked. Some players had to use VPN to redeem.
Idle Adventure Codes
Let’s talk about the Idle version (for players who might prefer lighter gameplay).
A. Idle codes overview
In The Seven Deadly Sins: Idle Adventure you still get coupon codes — more frequent, sometimes easier to redeem, very useful for early free progress.
B. Idle active codes
Examples: 1STDEVLETTER, BLESSFROM7DS, IDLEBREEZEGIFT, SINSFLOWER777, ANGELIC7DS, WELCOME2025.
C. Idle code list
Sample list:
1STDEVLETTER — 10,000 Diamonds
BLESSFROM7DS — rewards
IDLEBREEZEGIFT — rewards
SINSFLOWER777 — rewards
ANGELIC7DS — rewards
WELCOME2025 — Diamonds 2,500
And more.
D. Idle adventure rewards
The rewards tend to fuel gacha draws, hero summons, materials for upgrades. In a lighter-game they’re especially valuable because you might not grind as intensively.
E. Idle redemption guide
Generally:
Complete tutorial in Idle game.
In game menu → Settings/Account → Redeem Code (varies by region).
Input the code exactly, confirm.
Check mailbox/in-game rewards.
Also there is an official coupon page for Idle: Netmarble Idle Coupon
Code Reward Types and Benefits
Let’s break down what you get when you redeem codes — understanding this helps you decide when to use them and what to save them for.
A. Diamond/gem code rewards
Easy to understand: diamonds (or gems) are premium currency used for summons, draws, etc. Some codes give 10, 30, 50 diamonds/gems. For example, 7DS4K gave 50 Diamonds in Grand Cross.
B. Gacha ticket or summon ticket codes
Some codes provide hero summon tickets (for SSR or UR heroes). These are more rare.
C. Material rewards
Certain codes give upgrade materials: evolution pendants, awakening coins, hero cores etc. Example: NEWSTORY in Grand Cross gave 50 SSR Evolution Pendants.
D. Other resource codes
This includes stamina potions, draw power (in Idle version), or currency boosts. Idle code TAPTAPRPG7 gave 100 Hero Summon Tickets.
E. Strategic benefit
Using codes smartly can fast-track your progression: early summons = better heroes = easier content = faster auto-clear, etc. Codes are especially helpful if you’re F2P or semi-casual.
Code Lists and Databases
As your code stack grows (or you try ones you missed), you’ll want a good database or list.
A. Complete code list
Several websites compile all known valid codes and also expired ones. For example, PocketTactics lists a full list for Grand Cross.
B. Code database overview
Sites track “working vs expired”, region notes, reward details. Useful. They usually mark codes as “working as of date” or “expired”.
C. Updated code reference
Since codes expire, you’ll want to check recent updates (monthly/weekly) — Idle version lists show “October 2025” active codes.
D. Code collection guide
You can maintain your own list: “date used”, “reward”, “expiration”, “region”. Helps avoid duplicates or wasted time.
E. Comprehensive code compilation
If you save your list and check official social media + forums, you’ll likely catch most freebies. Bookmark trusted sources.
Code Redemption Process
Let’s cover how to redeem codes properly — crucial to avoid “invalid code” errors.
A. Redemption guide overview
Whether in Grand Cross or Idle, process is similar.
B. Step-by-step redemption
For Grand Cross:
Make sure you’ve finished tutorial (some guides say issue occurs before tutorial).
Tap Menu (gear icon) → Misc → Coupons.
Enter Netmarble ID if needed.
Input code exactly.
Press Use / Confirm.
Check in-game mailbox for reward.
For Idle: often Settings → Account → Redeem Code.
C. Coupon redemption mechanics
Important: copy-paste is safer than typing. Codes are case-sensitive.
D. Code entry process
Be mindful of region/server. Some users report “Invalid” because server mismatched or VPN needed.
E. Confirmation submission
After “Use”, wait a little — sometimes rewards take a moment to arrive in mailbox. If nothing shows, check mailbox and server again.
Official Redemption Platform
Some codes can be redeemed via website (not just in-game). This is especially useful if you’re on PC/emulator.
A. Netmarble coupon page
For Grand Cross: https://coupon.netmarble.com/nanagb
For Idle: https://coupon.netmarble.com/nanarise
B. Official website redemption
Enter your ID, choose game, paste coupon, click redeem.
C. Platform access guide
Works on PC browser or mobile browser. If mobile, you might be redirected to in-game.
D. Account linking
You often need your Netmarble Membership ID (player ID). Make sure you input correct server/region.
E. Verification process
If you’ve input wrong server or wrong ID, rewards may be lost or unrecoverable. Netmarble warns: “If you enter wrong server/membership number, rewards may not be recoverable.”
In-Game and PC Redemption
A. In-game redemption guide
Simpler for mobile users: open game → tutorial done → menu → coupons.
B. Menu navigation
Often bottom-right gear icon → Misc → Coupons.
C. Settings coupon access
Sometimes in Settings → Account → Coupons (especially Idle version).
D. PC redemption method
Via website (see above) or PC client if supported — still you might need to restart game after redeeming.
E. Mobile redemption guide
Mobile same as in-game; ensure you’re logged into correct server and your ID is correct.
Code Validity and Expiration
A. Active codes status
Check lists that say “Active as of [date]”. Even then, region matters.
B. Expired codes handling
When code is expired you’ll likely get “Invalid code” message. Lists of expired codes help avoid wasted attempts.
C. Invalid codes troubleshooting
Common causes: typo, case wrong, region mismatch, already redeemed, expired.
D. Code time limits
Some codes have clear expiry (“Valid till Jan 1 2025”), some don’t but region change might invalidate.
E. Expiration date tracking
I recommend noting when you first saw the code & redemption cut-off. Use community lists to verify.
Alright, that wraps up this deep-dive into Seven Deadly Sins codes — from the basics of what they are, to how you redeem them, to lists of actual working ones, and how to spot the invalid/expired ones. If you're playing Grand Cross or Idle Adventure, keep an eye out for codes; they’re one of the best free boosters you’ll get.
Final tip: Make it a habit to check official social channels, forums, and trusted code-list sites. Be quick when codes drop (they expire fast), and always redeem them properly (server, ID correct, tutorial completed).
See you in Britannia — may your summons be legendary and your codes never invalid!