OP-17 is the next mainline booster set for the One Piece Card Game, and it's a significant one — it lands on August 28, 2026 and marks the game's 4th anniversary. Anniversary sets have historically carried extra weight in this game, both in terms of design ambition and how collectors respond to them, so this is worth planning around whether you're a player or a collector.
Key details
- Release date: August 28, 2026
- Set number: OP-17, the 16th mainline booster set overall
- Theme: Spotlights the Four Emperors, one of the series' most iconic power groups
- Significance: The game's 4th anniversary release
Why anniversary sets tend to matter more
Looking at how past anniversary and milestone releases have performed, these sets tend to draw sustained collector interest well past their initial release window, rather than the typical pattern of a set being hot for a few weeks and then settling. Part of that is genuinely stronger card design and art direction reserved for these releases; part of it is simply that "4th anniversary" as a label carries lasting collector appeal the way a standard numbered set doesn't.
What this means practically
If you're planning to buy in in advance, pre-orders for anniversary sets have historically sold through faster than standard releases — worth locking in early rather than waiting for street date if there's a specific product you want sealed. If you're more focused on singles, the safer play is usually to wait for release and see which cards the actual pull rates and tournament results favor, rather than speculating heavily beforehand.
We'll be tracking OP-17 prices live from release day — check the live board once it drops, and this set will get its own browse page automatically as soon as pricing data is available.
Full event details are also listed on our events calendar, alongside official Regional tournaments happening around the same window.