The Sonic's Story so far
It's the year 1991, after a success in the 8-bit console market with his Master System the Service Games (SEGA for friends) publishes his first 16-bit machine: the SEGA MegaDrive (Genesis for America).

The japanese software house, still lacking a mascotte, organizes a contest to choose an appropriate character from the ones partecipating. The Contest was won by the blue blur: Sonic the hedgehog

A platform game with him is a big success and the next year, SEGA releases the sequel Sonic 2 where Miles "Tails" Prower appears on the scene, becoming the ever-present Sonic's pal in all of his adventures. In 1994 Sonic 3 is released and Sonic & Knuckles. after it. Sonic & Knuckles cartridge has an extra connector on his upper side where ohter games could be connected. The "fusion" with Sonic 3 created Sonic 3 & Knuckles.

But the Mega Drive knew a sad fate in his last years of life, maybe caused by the unsuccessful expansions for it (MegaCD and 32X). Even Sonic games (Sonic CD and Knuckles' Chaotix) didn't sell as excepted.

The SEGA Saturn was meaning to make the SEGA return to the old happy days, games like Nights, from Sonic Team too. But Sonic games were just a remake of the slowest sonic game ever: Sonic 3D Blast and a racing game not enough fun as you expect from a game from Sonic Team. A terrific marketing policy (and the enorumous cost of the machine) was the ruin of the SEGA Saturn

In the year 2000 the Dreamcast came along with 2 sonic in full 3: Sonic Adventure 1 & 2. The Second episode intruduced a mysterious character: the black hedgehog, Shadow the Hedgehog.

Dreamcast had enormous capacity, and was even the first game console featuring and on-line game. But the Sony Playstation 2 sold much more and the SEGA found himself with lots of debts. So SEGA abandoned hardware in favour of software, and it even became developing videogames for his worst rival in the history of games: Nintendo! The result was a remake of Sonic Adventure 2: Sonic Adventure 2 battle witch had an improved 2 player mode.

Now the various SEGA team develop games on the platform they prefer. The Sonic Team, then began making games for Microsoft's X-box too.

Changing mind again, Sonic Team suspends the Sonic Adventure serie and develops a sonic game on all platforms (GameCube, Playstation 2 and X-box). This is Sonic Heroes.

And what about the future? Sonic and Mario together?

Ghostface

Here's list of Sonic Games published from 1991

SONIC GAMES FROM 1991
Game Console Release Date (in Japan) Description
Sonic the Hedgehog
mega Drive, Master System,Game Gear 23/06/1991 The first sonic game. The Master System and Game Gear version are a bit different from the one for Mega Drive
Sonic the Hedgehog 2
Mega Drive, Master System, Game Gear 24/11/1992 The sequel of Sonic the Hedgehog, this is the game where Tails debuts
Sega Sonic the Hedgehog
Arcade Coin-op 11/93 The first and only sonic game for arcade machines. It uses a System 32 board and features a 3D isometric graphics and the multiplayer up to 3 players. Characters were controlled with a trackball and a button!
Sonic CD Mega CD 23/09/1993 The first sonic game for MEGA CD. Metal Sonic appears here for the first time.
Sonic Chaos Master System, Game Gear 23/11/1993 An adventure of the blue blur for the 8 bit SEGA console
Sonic Spinball
Mega Drive,Game Gear 11/1993 A pinball game where Sonic is the ball!
Doctor Robotnik's Mean Bean Machine
Mega Drive 11/93 Take Puyo Puyo and add Robotnik's bots
Sonic the Hedgehog 3
Mega Drive, 02/02/1994 After two years, here comes the third chapter of Sonic's adventures. Knuckles appears here as a foe.
Sonic Gameworld/Tails and the music maker Sega Pico 08/94 2 games for SEGA PICO, the japanese console for kiddies
Sonic & Knuckles
Sega Mega Drive 18/10/1994 One of the last good games released for Mega Drive, Knuckles becomes a playable character. This game pak can be connected to Sonic 3, Sonic 2 and Sonic 1 in order to unlock new features or new games too!
Sonic & Tails 2 Game Gear 11/11/1994 Sequel of Sonic Chaos
Tails's Adventure Game Gear 22/09/1995 A game with Tails as main character
Knuckles Chaotix
32X 03/95 Knuckles is the main character of this game where two characters, holding an elastic rope, must be controlled. There's no trace of Sonic or Tails here.
Sonic 3D blast
Sega Saturn,Mega drive 11/96 An isometric platform of Sonic
Sonic R Sega Saturn 20/06/1997 A Racing game with a lot of Sonic characters
Sonic Adventure Sega Dreamcast 1999 Sonic in 128 bits! Wonderful graphics, six playable characters...fantastic!
Sonic Advance Nintendo Game Boy Advance 2001 Sonic makes his debut on a Nintendo Console with this game!
Sonic Adventure 2/Sonic Adventure 2 battle Sega Dreamcast/Nintendo Game Cube 20/6/2001 20/12/2001 Il mio preferito!!! grafica 3D spettacolare bella trama e soprattutto LUI!!! A game with spectalur graphics, a nice plot and...SHADOW! In the GCN version a 2 player mode was added.
Sonic Heroes Nintendo Game Cube, Sony Playstation 2, Microsoft X-Box 12/2003 A platform with great gameplay! It has some problems with collision and the 2 player mode is SLOOOW!!!
Sonic Advance 2 Nintendo Game Boy Advance 2003 the sequel of Sonic Advance, a game with an incredible speed!
Sonic N Nokia N-gage 2002 A remake of Sonic Advance for Nokia N-Gage
Sonic Battle Nintendo Game Boy Advance 2004 An hypercinetic fighitng game with Sonic characters
Sonic Pinball Party Nintendo Game Boy Advance 2004 A collection of pinball inspired to SEGA games, Sonic couldn't miss this!
Sonic Advance 3 Nintendo Game Boy Advance 2004 third platform for GBA that introduces the idea of two characters to control
Sonic Shuffle SEGA Dreamcast 2000 A party game with cards

There are also the Sonic Compilation for Mega Drive, Sonic jam for Saturn. Sonic appeared also in Christmas Nights and Fighters Megamix. There is also the Sonic Mega Collection for GameCube and the remake Sonic Adventure DX Director's cut for GCN and PC.