Play One Piece: Maboroshi No Grand Line Boukenki emulator game online in the highest quality available. One Piece: Maboroshi No Grand Line Boukenki is a Gameboy Color game that you can enjoy on Play Emulator. This GBC game is the US English version that works in all modern web browsers without downloading. One Piece: Maboroshi No Grand Line Boukenki is part of the RPG Games, Adventure Games, and Action Games you can play here. PlayEmulator has many online retro games available including related games like Fire Emblem: The Sacred Stones, Harry Potter and the Sorcerer’s Stone, and Legend of Zelda: Ancient Stone Tablets.