Grand Blue is an open-world pirate RPG on Roblox developed by Superstephon, clearly shaped by the spirit of One Piece. You explore a vast sea, take on quests, fight bosses and hunt for the mysterious Cursed Fruits.
Progression spans mining, fishing and ship-based adventure, with a sandbox world that rewards curiosity. It entered early access / beta during 2026 and has been steadily expanding its map and systems.
If you have ever wanted to live the pirate life with friends in a blocky ocean, Grand Blue is the closest Roblox gets.
