Sega of Japan reveals that both games will be available on the same day.

Sega of Japan has announced that both Sonic Mega Collection for the GameCube and Sonic Advance 2 for the Game Boy Advance will be available on December 19 in Japan. Sonic Mega Collection includes several classic Sonic the Hedgehog games, including Sonic the Hedgehog, Sonic the Hedgehog 2, Sonic the Hedgehog 3, Sonic & Knuckles, Sonic 3D Blast, Sonic Spinball, and Dr. Robotnik's Mean Bean Machine. Sonic Advance 2 lets players assume the role of Sonic, Tails, or Knuckles as they travel through several new worlds.

By Giancarlo Varanini

Source: Gamespot