Z Piece

Z Piece is a One Piece-inspired action RPG on Roblox by Arch Studios 3.0 that blends the classic Devil Fruit combat formula with Jujutsu Kaisen crossover content. Players choose to be a Pirate or a Marine, sail across progressively harder seas, complete quests to level up, and collect Fruits - the game's core ability system. With 439K favorites (one of the highest counts in the One Piece RPG subgenre), 53.6M visits, and active development through early 2026, Z Piece is one of the more prominent One Piece games on Roblox. It shares its anime RPG DNA with Blox Fruits and King Legacy, but distinguishes itself with JJK crossover Fruits and Specs.

The Fruit system is the heart of Z Piece. Fruits grant unique combat movesets categorized by their One Piece lore type. The highest rarity tier is Cosmic, which includes JJK-inspired additions like the Yuta Fruit and Sukuna Fruit. Players roll for Fruits at the Fruit Spin NPC or obtain them through Fishing, which adds a secondary acquisition method. Specs - separate ability specializations like Hakari v2 and Rika Spec - are rolled at a dedicated Spec Spin NPC.

Traits are passive character bonuses with Special Grade Trait as the Cosmic-rarity top tier. Leveling up requires completing quests against progressively harder enemy types across multiple Seas - the fourth Sea (Sea 4) being the most recent content addition. The DMC World is a special sea area with active XP and Money multipliers, making it a prime grinding location.

Gems are the premium currency, used for Fruit and Spec spins and cosmetics. Most codes reward Gems plus a timed 2x XP boost - the XP boost matters because leveling from mid-game to endgame requires many hours of questing. Note that redeeming codes requires joining the Arch Studios 3.0 Roblox group.