Grand Piece Online (GPO) Codes — September 2026
Every working Grand Piece Online code, with what it gives and how to redeem it. GPO codes expire fast — sometimes within a day or two — so redeem anything you want now, not later. This page rebuilds nightly.
Working GPO codes
| Code | Reward | Notes |
|---|---|---|
FREE_Drops3 | 2x drops for 72 hours | Boost starts when redeemed |
FREE_EXP3 | 2x EXP for 72 hours | Boost starts when redeemed |
5FREETAILORVOUCHERS_3 | 5 tailor vouchers | One-time redeem |
All three were confirmed working in late August 2026. If one has expired since, the in-game redeem box will say Expired — check back here after the next rebuild, or watch the official Discord where new codes are announced first (see our GPO Discord guide).
No new codes shipped with the Whole Cake Part 2 update as of 2026-09-01. If the developers drop launch-celebration codes, they will appear here.
How to redeem codes in GPO
- Press
M(or tap the menu icon on the left edge of the screen) to open the menu. - Click the gear icon to open Settings.
- Click the text field at the bottom of the Settings screen.
- Paste a working code and press Enter.
Codes are case-sensitive — copy and paste them rather than typing. The game responds with Valid, Expired, Invalid, or Already Used, so you always know what happened.
Expired codes
The previous run of the same boost series is retired — these no longer redeem:
FREE_Drops2FREE_EXP25FREETAILORVOUCHERS_2
GPO retires most codes quickly and re-issues boosts under new numbered names
(the _3 set above replaced the _2 set), which is why lists on other
sites go stale within weeks.
GPO codes FAQ
How do I redeem codes in Grand Piece Online?
Press M to open the menu, click the gear icon to open Settings, click the text field at the bottom, paste a code, and press Enter. On mobile, tap the menu icon on the left side of the screen, then the settings cog, then the Enter Code field.
Why is my GPO code not working?
GPO codes are case-sensitive, so paste them exactly instead of typing. Most codes also expire fast — often within days — and each code can only be redeemed once per account. The game tells you whether a code is Valid, Expired, Invalid, or Already Used.
Are there new codes for the Whole Cake Part 2 update?
As of 2026-09-01, no new codes tied to Whole Cake Part 2 have been published — the three boost codes above are still the current set. New codes are usually announced in the official Discord first.
What just updated in GPO
Whole Cake Part 2 landed on August 29–30, 2026, bringing the new Leopard fruit and more — read the full breakdown in our Grand Piece Online update log, or see what the update is doing to prices on the value list.