"EU" signifies the European release. While the Switch is region-free, having the correct region file is often important for DLC compatibility if your eShop account is based in Europe.
Buildings and terrain shatter during combat, making battles feel truly cinematic. ONE-PIECE-PIRATE-WARRIORS-4-Switch-NSP-EU-Actua...
The EU version includes multilingual support (English, French, German, Italian, Spanish) and is fully compatible with any Switch console due to the system being region-free. "EU" signifies the European release