Sonic the Hedgehog or just Sonic is the primary franchise from Sega. The first game in the franchise was released on June 23, 1991. Since then, Sonic has become one of the world's best-known video game characters, with his series having sold over 80 millions of copies as of 2011.
Sales data from List of best-selling video games (Wikipedia)
| Year | Platform | Title | Sales (in Millions) |
| 1991 | Sega Genesis | Sonic the Hedgehog | 15 million |
| 1992 | Sega Genesis | Sonic the Hedgehog 2 | 6 million |
| 1994 | Sega Genesis | Sonic & Knuckles | 1.24 million in U.S. |
| 1994 | Sega Genesis | Sonic the Hedgehog 3 | 1.02 million in US |
| 1998 | Sega Dreamcast | Sonic Adventure | 2.5 million |
| 2003 | Nintendo Gamecube | Sonic Mega Collection | 1.44 million in US |
| 2003 | Playstation/Xbox/Gamecube | Sonic Heroes | 1.08 million in US |
| 2007 | Mobile | Sonic the Hedgehog | 8 million |
| 2001 | Nintendo Gamecube | Sonic Adventure 2 Battle | about 1.632 (1.44 US, 192,186 JPN) |
| 2001 | Nintendo GBA | Sonic Advance | about 1.415 (1.21 US, 204,542 in Japan) |
| 2003 | Nintendo Gamecube | Sonic Mega Collection | about 1.453 (1.38 US, 72,967 in Japan) |
| 2007 | Wii, NDS | Mario & Sonic at the Olympic Games | 5 million total, 3.4 million (Wii), ? (NDS) |
| 2007 | Wii | Sonic and the Secret Rings | 1.2 million |
| 2008 | Wii, Xbox 360, PS3 | Sonic Unleashed | 2.45 |
| Best selling franchises | |
|---|---|
| Mario · Pokémon · FIFA · Grand Theft Auto · Call of Duty · Wii Series · Lego · The Sims · Minecraft · Final Fantasy · Assassin's Creed · Need for Speed · Sonic · Madden NFL · The Legend of Zelda · Star Wars · Resident Evil · Pro Evolution Soccer · Tetris · NBA 2K · (more) See also: Best selling games · Best selling games worldwide · Highest grossing franchises |