One Piece: Treasure Wars
WonderSwan Color · 2002
About this game
One Piece: Treasure Wars is an Action game, developed by Graphic Research and published by Bandai, which was released in Japan in 2002.
In the game, the player chooses one of the Straw Hat Pirates and fights other members of the crew in the board game.
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The main goal is for the player to find the treasure or special item before his opponent does.
Each player will run around the board fighting against other pirates.
The members of the crew the player did not choose as his or her character will also be running around along with other enemies who the crew has to fight.
About WonderSwan Color
The WonderSwan Color (2000) added — as the name suggests — a color screen to Bandai's Japan-only handheld line, while remaining backward compatible with original WonderSwan cartridges. Like its predecessor, it never released outside Japan, so collecting is strictly an import hobby, with several well-regarded RPGs and puzzle titles standing out as the platform's most sought-after games.
Gamevaro tracks One Piece: Treasure Wars for WonderSwan Color with separate market values for loose, complete-in-box (CIB) and factory-sealed copies, sourced from real eBay sales. Prices also vary by region — PAL, NTSC-U and NTSC-J releases of the same game often sell for different amounts due to print run sizes and regional collector demand.
Adding One Piece: Treasure Wars to a Gamevaro collection takes seconds — search by title or scan the box barcode, and the app fills in cover art, release details and current pricing automatically. This WSC release dates back to 2002.
Market values by condition
NTSC-J
Recent sales
| Date | Type | Region | Price |
|---|---|---|---|
| 2026-07-20 | Loose / Item only | NTSC-J | €18.87 |
Rarity & condition
Only a handful of market sales have been tracked for One Piece: Treasure Wars, suggesting it doesn't trade hands very often — a sign of relative scarcity compared to more common WonderSwan Color titles.
Complete-in-box (CIB) copies typically command a premium over loose cartridges/discs because the original box and manual are more fragile and get discarded or damaged over time — fewer complete sets survive.
Frequently asked questions
How much is One Piece: Treasure Wars worth?
One Piece: Treasure Wars for WonderSwan Color is currently worth €18.87 loose. Prices are based on real sales and update regularly on Gamevaro.
Is One Piece: Treasure Wars rare?
One Piece: Treasure Wars has only a handful of tracked market sales, suggesting relative scarcity compared to more common WonderSwan Color titles.
What's the difference between loose, CIB and sealed for One Piece: Treasure Wars?
Loose means cartridge or disc only, CIB (complete in box) includes the original box and manual, and sealed means factory-sealed and never opened. These are tracked as separate market values because the price gap between them can be significant, especially for older releases.
Ratings & Reviews
Also on other platforms
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