In 2001, Sega announced it would transition from a first-party to a third-party software publisher, in response to the international failures of the Saturn and Dreamcast. Wanting to reach new players by creating an enhanced version of one of its older games, in June 2003 Sega released Sonic Adventure DX: Director's Cut, a port of Sonic Adventure for the GameCube and Windows. While mostly identical to the original release, Sonic Adventure DX features updated graphics, including higher-resolution textures and more detailed character models, has a locked frame rate of 60, and sports a redesigned Chao-raising system that uses connectivity with the Game Boy Advance (GBA). It includes 60 new missions and the option to unlock all 12 Sonic games released for the Game Gear. Additionally, Metal Sonic can be unlocked as a playable character if all 130 emblems are collected. These features were added to appeal to players of the original game.