Mario and Sonic at Olimpic Games
2007 Christmas:  Wii, DS

Sonic and the Secret Rings
1 Jan 2007:  Wii

SONIC the Hedgehog ('06) 
2006:  MULTI: PlayStation 3, XBOX 360

Sonic Rivals
01 Sep 2006:  PlayStation Portable

Sonic Riders 
17 Mar 2006:  MULTI: Gamecube, PlayStation 2, XBOX, SEGA, PC

Sonic Rush
25 Nov 2005:  Nintendo DS

Shadow the Hedgehog
18 Nov 2005:  MULTI: Gamecube, PlayStation 2, XBOX

Sonic Gems Collection
30 Sep 2005:  MULTI: Gamecube, PlayStation 2

Sonic Mega Collection +
04 Feb 2005:  MULTI: Playstation 2, XBOX, SEGA PC

Sonic Advance 3
18 Jun 2004:  Game Boy Advance

Sonic Battle
27 Feb 2004:  Game Boy Advance

Sonic Heroes
04 Feb 2004:  MULTI: Gamecube, PlayStation 2, XBOX, SEGA PC

Sonic Pinball Party
30 Oct 2003:  Game Boy Advance

Sonic Adventure DX: Director's Cut
27 Jun 2003:  Gamecube, SEGA PC

Sonic Advance 2
21 Mar 2003:  Game Boy Advance

Sonic Mega Collection
07 Mar 2003:  Gamecube

Sonic Adventure 2: Battle
03 May 2002:  Gamecube

Sonic Advance
23 Mar 2002:  Game Boy Advance

Sonic Adventure 2
23 Jun 2001:  Dreamcast

Sonic Shuffle
Mar 2001:  Dreamcast

Sonic Pocket Adventure
Nov 1999:  Neo Geo Pocket Color

Sonic Adventure
14 Oct 1999:  Dreamcast

Sonic R
21 Nov 1997:  SEGA Saturn

Sonic Jam
Aug 1997:  SEGA Saturn

Sonic's Gameworld
1997:  SEGA Pico

Sonic Jam
1997:  Tiger Game.com

Sonic 3D Flickies' Island
Nov 1996:  Mega Drive/Genesis, SEGA Saturn

Sonic Blast
Nov 1996:  Game Gear

Sonic the Fighters
Jun 1996:  Arcade

Sonic Labyrinth
Oct 1995:  Game Gear

Tails Adventure
Sep 1995:  Game Gear

Knuckles' Chaotix
May 1995:  32X

Tails Sky Patrol
28 Apr 1995:  Game Gear

Sonic Drift 2
Mar 1995:  Game Gear

Sonic Triple Trouble
Nov 1994:  Game Gear

Sonic & Knuckles
18 Oct 1994:  Mega Drive/Genesis

Tails and the Music Maker
Sep 1994:  SEGA Pico

Sonic Spinball
Aug 1994:  Master System, Game Gear

Sonic Drift
18 Mar 1994:  Game Gear

Sonic the Hedgehog 3
24 Feb 1994:  Mega Drive/Genesis

Dr. Robotnik's Mean Bean Machine
Jan 1994:  Master System, Game Gear

Dr. Robotnik's Mean Bean Machine
29 Nov 1993:  Mega Drive/Genesis

Sonic Spinball
15 Nov 1993:  Mega Drive/Genesis

Sonic Chaos
Nov 1993:  Master System, Game Gear

Sonic the Hedgehog CD
01 Oct 1993:  Mega CD/Sega CD, SEGA PC

SEGASonic the Hedgehog
Sep 1993:  Arcade

Sonic the Hedgehog 2
24 Nov 1992:  Mega Drive/Genesis

Sonic the Hedgehog 2
Oct 1992:  Master System, Game Gear

Sonic the Hedgehog
Dec 1991:  Master System, Game Gear

Sonic the Hedgehog
23 Jun 1991:  Mega Drive/Genesis