Japanese

History of Sonic The Hedgehog. And Sonic's Cameo Appearances.
Being related with a video game is a green background, and except it is shown by the gray background.

1991

06.23	SONIC THE HEDGEHOG	US	SG
06.**	SONIC THE HEDGEHOG (AU) (AU)	EU	MD
07.26	SONIC THE HEDGEHOG	JP	MD	6,000 YEN
10.25	SONIC THE HEDGEHOG (EU)	LA	MS
12.28	SONIC THE HEDGEHOG	JP	GG	3,800 YEN
12.**	SONIC THE HEDGEHOG	US	GG
12.**	SONIC THE HEDGEHOG	EU	GG
**.**	SONIC ERASER (SEGA GAME LIBRARY)	JP	MD modem

SONIC, Dancing in the "RAD MOBILE(AC)". (Picture:1994, SS "GALE RACER")
	The release of this game was to be earlier than the "Sonic 1".
	SONIC dancing...

JP(JAPAN), US(North America), LA(Latin America), EU(Europe)
MD(MEGA DRIVE), MC(MEGA CD) SG(GENESIS), GG(GAME GEAR), MS(MASTER SYSTEM), PI(PICO), SS(SEGA SATURN), DC(DREAMCAST), AC(ARCADE), 32(32X), S32(SUPER32X), NGP(NEOGEO POCKET), NGC(NINTENDO GAME CUBE), GBA(GAME BOY ADVENCE), ia(PHONE, i-MODE)

Reference materials: Sonic Jam, Sonic 10th Anniversary History Book, Sega Arcade History, Sega Consumer History.