Lost Sword Code Redemption Guide: How to Claim Rewards

To redeem codes in Lost Sword, complete the introductory tutorial, open the in-game settings menu from the main lobby, navigate to the account tab, and submit your code into the coupon registration field. Claimed rewards are sent directly to your in-game mailbox.

Step-by-Step Code Redemption

The settings and mailbox features unlock only after completing the mandatory prologue and reaching the main lobby screen. Once unlocked, follow these steps to redeem your codes:

Tap the gear icon in the top-right corner of the main lobby to open Settings.
Select the Account tab from the side menu.
Tap the Register Coupon (or Enter Code) button.
Enter or paste your code into the text field.
Confirm the submission.
Return to the main lobby and open your Mailbox to collect the items.

Platform Differences

Android and Emulators: Code redemption is available directly within the in-game account settings.
iOS: In-app redemption options may be unavailable due to platform restrictions. If no button appears, copy your unique account ID from the account menu and enter it alongside the coupon string on the publisher's external web redemption portal.

Code Types in Lost Sword

Lost Sword distributes two types of redemption vouchers:

Code Type	Source	Typical Rewards	Limitations
General Game Codes	Official milestones, updates, maintenance compensation	Summon currency, tickets, stamina, gold	One redemption per account; set expiration dates
Creator Codes	Partnered content creators and community streams	Bonus currency, upgrade mats, consumables	Short redemption windows; may limit support to one creator

Creator codes often carry stricter redemption quotas and shorter active periods than general game codes. Redeem them as soon as creators publish them.

Troubleshooting Redemption Errors

If a code fails to process, check for these common issues:

Trailing Spaces: Copying codes from video descriptions or social posts often captures blank spaces at the beginning or end. The text parser reads these as invalid characters. Delete the text and type the code manually if it fails.
Case Sensitivity: Codes generally require exact capitalization and hyphen placement as provided by official sources.
Quota and Expiration: Prompts stating "Already Expired" or "Usage Limit Exceeded" indicate that the code's active period has ended or the global activation cap was reached.
Mail Expiration: Rewards delivered to the mailbox have individual expiration timers. Collect items promptly so they do not auto-delete.

Managing Redeemed Rewards

Summon Currency: Reserve coupon currency and tickets for limited rate-up banners rather than spending them immediately on standard recruits, ensuring access to pity guarantees.
Stamina: If a code provides stamina potions or energy refills, avoid claiming them while your energy bar is full. Excess stamina prevents passive energy regeneration. Leave stamina rewards in your mailbox until you need them for extended progression pushes or limited-time events.