Sonic Advance 2 (ソニックアドバンス２, Sonikku Adobansu Tsū) is a 2002 handheld platform video game developed by Sonic Team and Dimps, and published in Japan by Sega, in North America by THQ and in Europe by Infogrames exclusively for the Game Boy Advance as part of Sega's Sonic the Hedgehog series. The game was released in Japan on December 19, 2002, in North America on March 9, 2003, and in PAL Regions on March 18, 2003. It is the sequel to Sonic Advance, and is based on a modified version of its game engine. Gameplay consists of the player defeating "zones" as one of five unlockable characters, each with their own unique attributes. After each zone is completed, the player faces Doctor Eggman, the story's antagonist, in a boss battle.