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After Skypiea in April, the One Piece Card Game is making a strong impact with OP-16 “The Hour of the Decisive Battle”, an expansion entirely focused on one of the series’ most memorable arcs: Marineford. More than 120 cards, a worldwide release finally synchronized with Japan, and a packed tournament schedule for the summer: here is everything you need to know before getting started. Approximately 7 minutes of reading.
OP-16: What the Marineford expansion contains
One of the most iconic arcs finally adapted into a card game
Released on June 12, 2026, OP-16 focuses directly on the Marineford War, one of the most traumatic and memorable arcs in the entire series. The expansion contains more than 120 new cards, covering both the Marines and the pirates present during this pivotal battle, following in the footsteps of our Marineford arc figurines, already highly sought after by collectors.
A logical continuation after several notable expansions
This release comes during an especially busy period for 2026: after an expansion focused on the Shichibukai in January, a special edition featuring heroines led by Vivi in February, and a notable return to Skypiea in April, Bandai is following up with what is probably the most eagerly awaited arc of all among the French community.
The iconic figures featured in the expansion
Unsurprisingly, OP-16 features most of the major figures from the battle: Whitebeard in all his power, a Garp torn between his duty and his family, as well as several cards dedicated to the Marines who made their mark on this war. For collectors who also want to follow Luffy's evolution through his different forms, the Gear 4 Holo card perfectly complements a collection focused on the character's transformations.
→ View the entire One Piece Card Collection
The cards the community is already talking about
Mechanics reworked to match the intensity of the battle
Beyond the fan service, OP-16 introduces several revamped gameplay mechanics to better capture the chaos and intensity of Marineford: synergies between Marine cards and chain-triggered effects designed to represent the constant twists and turns of this battle in the manga and in Ace's story.
A ban list that reshuffles the cards ahead of time
As a reminder, Bandai had already published an update to the ban list in April 2026, banning Charlotte Pudding and bringing back six cards that had previously been prohibited in tournaments. This was a way to prepare the ground before OP-16 arrived and prevent the expansion from further unbalancing an already crowded metagame.
Did you know?
OP-16 is the game's first expansion to offer a strictly simultaneous launch in Japan and the rest of the world, ending the several-month gap that had frustrated European players since the launch of the French version.
A Worldwide Release Finally in Sync
The End of the Delay That Put French Players at a Disadvantage
Until now, French players often had to wait several months after the Japanese release to discover a new expansion, with the risk of spoilers and the competitive lag that this entails. With OP-16, Bandai is finally moving to a simultaneous worldwide release, a structural change that brings the trading card game closer to the release schedule of the anime and Netflix live action.
What This Changes for Stores and Players
In practical terms, everyone can now discover the new cards at the same time, standardizing secondary-market prices from day one and avoiding situations where some players are already playing with cards that others have not yet been able to obtain.
⚡ Editor's Pick
One Piece TCG Card — Monkey D. Luffy Gear 5 (Nika, Holo Rare)
24,99 €
The most iconic transformation from the recent series, in a holo rare version for discerning collectors.
Discover →→ View the entire One Piece Card Collection
The Summer 2026 Competitive Calendar
The Treasure Cup, a Permanent Fixture
The Treasure Cup, a tournament held year-round in partner stores, will continue its usual cycle alongside the launch of OP-16. It is the perfect opportunity to test your new cards in real conditions, in a more relaxed atmosphere than top-level official tournaments.
A Special Tournament to Celebrate the Six New Decks
From July 31 to August 30, 2026, a special event tournament will specifically celebrate the release of the six new starter decks linked to the expansion. A great opportunity for players who are still hesitant to invest, allowing them to try several archetypes before making their final choice.
Where to Participate and How to Prepare
The game's partner stores organize these tournaments throughout France, with formats designed for both beginners and experienced players. Before signing up, it is best to know the broad outlines of the Marineford arc and its key figures, starting with Akainu, whose role in the battle remains one of the most debated turning points in the entire series.
One Piece TCG Duo Pack — Luffy & Shanks (2 Pieces)
★★★★★ — Ideal for starting a collection
29,99 €
Two iconic cards brought together in a single pack, perfect for getting started before OP-16 arrives.
I want one →→ View the entire One Piece Card Collection
Should you invest in this expansion?
For fans of the Marineford arc, the answer is almost obvious: with its thematic richness, new mechanics, and synchronized worldwide release, OP-16 checks all the boxes for a successful expansion. For more general collectors, our broader catalog of merchandise lets you expand your collection beyond the card game itself.
Our tips for getting started or returning to the game
If you are discovering the game with this expansion, start with a complete starter deck rather than individual booster packs, then add individual cards according to your needs. Our One Piece glossary can also help you find your way among the many character references featured on the cards, while our page on the arcs in chronological order helps place Marineford within the broader story before you get started.
Building your collection beyond cards
For fans who want to go beyond simply playing the game, our One Piece Figures collection also features the major Marineford figures in physical form, while our gift ideas selection offers several gift sets specially designed for trading card game enthusiasts. Our page dedicated to the Straw Hat crew is also useful for placing each character in context before investing in a specific card.
Frequently Asked Questions
Answers to the most frequently asked questions about OP-16. To test your knowledge of the world more broadly, our One Piece quiz remains available at any time.
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