According to the rumor, a lead tester at Sega was devastated by the game's reception. He claimed the version released to stores was actually an older, unstable build accidentally sent to the manufacturer. Before leaving the company, he supposedly leaked the "Gold Master" ISO onto a private file-sharing server. The story goes that this version includes:
To obtain a ISO for the Xbox 360, it is important to distinguish between official, community-improved, and third-party sources. Official & Legal Methods Sonic The Hedgehog 2006 Xbox 360 Iso Download
Sonic The Hedgehog (2006), also known as Sonic '06, is an action-adventure game developed by Sonic Team and published by Sega. Released for the Xbox 360 and PlayStation 3 consoles, the game was intended to be a major milestone in the Sonic franchise, celebrating the character's 15th anniversary. However, it received overwhelmingly negative reviews from critics and fans alike, due to its poor gameplay, weak storyline, and numerous technical issues. According to the rumor, a lead tester at