DETAILS Format Mega Drive Released 21 Nov 1992 Publisher Sega Product ID G-4088 Size (cm) 17.8 x 12.8 x 2.5 Weight (kg) 0.18

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Following the phenomenal success of the first Sonic (1991), a sequel was hugely anticipated. Similar to the original, twice the size, 2-player and twice the fun. A superb sequel - a little overlong perhaps, but that's just being fussy. Standard MD case, 8Mbit cartridge, colour booklet.

DETAILS Format Game Gear Released 21 Nov 1992 Publisher Sega Product ID G-3321 Size (cm) 11 x 9.5 x 2 Weight (kg) 0.08

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The Game Gear Sonic 2 follows the same blueprint as the GG Sonic - it makes up for the technical loss by mixing in a little exploration. Great stuff; a Game Gear favourite! Standard small-size GG packaging, 4Mbit cartridge, colour booklet.

DETAILS Format Sega Saturn Released 20 June 1997 Publisher Sega Product ID GS-9147 Size (cm) 14.2 x 12.4 x 1 Weight (kg) 0.10

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Superbly presented 4-in-1 compilation for the Sega Saturn. Features: - Sonic (1991) - Sonic 2 (1992) - Sonic 3 (1994) - Sonic & Knuckles (1994) Also includes an addictive 3D 'Sonic World' full of mini-games, museums, galleries, sound tests and more. A great package, recommended! CD case, Sega Saturn CD-ROM disc, 26-page colour manual, spine card.

DETAILS Format Sega Saturn Released 23 July 1998 Publisher Sega Product ID GS-9200 Size (cm) 14.2 x 12.4 x 1 Weight (kg) 0.10

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'Sega Saturn Collection' re-issue. - Sonic (1991) - Sonic 2 (1992) - Sonic 3 (1994) - Sonic & Knuckles (1994) A surprisingly rare print, much harder to find than the original! CD case, Sega Saturn CD-ROM disc, colour manual, spine card.

DETAILS Format GameCube Released 19 Dec 2002 Publisher Sega Product ID DOL-GSOJ-JPN Size (cm) 14.7 x 10.5 x 1.5 Weight (kg) 0.10

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Sonic makes his first appearance on a Nintendo format! Features 7 Mega Drive titles: - Sonic (1990) - Sonic 2 (1992) - Sonic 3 (1994) - Sonic & Knuckles (1994) - Sonic Spinball (1993) - Mean Bean Machine (1993) - Sonic 3D (1996) Standard GC packaging, GameCube game disc, colour booklet.

DETAILS Format PlayStation 2 Released 9 Dec 2004 Publisher Sega Product ID SLPM-65758 Size (cm) 19 x 13.5 x 1.5 Weight (kg) 0.18

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Features 7 Mega Drive titles: - Sonic (1990) - Sonic 2 (1992) - Sonic 3 (1994) - Sonic & Knuckles (1994) - Sonic Spinball (1993) - Mean Bean Machine (1993) - Sonic 3D (1996) And 6 Game Gear titles as a 'Plus': - Sonic (1991) - Sonic & Tails (1993) - Sonic Drift (1994) - Sonic Labyrinth (1995) - Mean Bean Machine (1993) - G Sonic (1996)

DETAILS Format Xbox Released 9 Dec 2004 Publisher Sega Product ID ZD6-00003 Size (cm) 19 x 13.5 x 1.5  Weight (kg) 0.18

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7 Mega Drive titles: - Sonic (1990) - Sonic 2 (1992) - Sonic 3 (1994) - Sonic & Knuckles (1994) - Sonic Spinball (1993) - Mean Bean Machine (1993) - Sonic 3D (1996) 6 Game Gear titles: - Sonic (1991) - Sonic & Tails (1993) - Sonic Drift (1994) - Sonic Labyrinth (1995) - Mean Bean Machine (1993) - G Sonic (1996)

DETAILS Format GameCube Released 11 Aug 2005 Publisher Sega Product ID DOL-G2XJ-JPN Size (cm) 14.7 x 10.5 x 1.5 Weight (kg) 0.10

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2nd Sonic compilation; features: - Sonic CD (1993) - Sonic The Fighters (1996) - Sonic R (1997) And 6 Game Gear games: - Sonic 2 (1992) - Sonic Spinball (1994) - Sonic & Tails 2 (1994) - Sonic Drift 2 (1995) - Tails Sky Patrol (1995) - Tails Adventures (1995) Standard GC packaging, GameCube game disc, colour booklet.

DETAILS Format PlayStation 2 Released 11 Aug 2005 Publisher Sega Product ID SLPM-66074 Size (cm) 19 x 13.5 x 1.5 Weight (kg) 0.18

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PS2 version of Gems, features: - Sonic CD (1993) - Sonic The Fighters (1996) - Sonic R (1997) And 6 Game Gear games: - Sonic 2 (1992) - Sonic Spinball (1994) - Sonic & Tails 2 (1994) - Sonic Drift 2 (1995) - Tails Sky Patrol (1995) - Tails Adventures (1995) PS2 case, PlayStation 2 DVD-ROM disc, colour manual.

DETAILS Format Audio CD Released 19 Oct 2011 Publisher DCT Records Product ID POCS-21032/4 Size (cm) 14.2 x 12.4 x 1 Weight (kg) 0.15

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20th Anniversary soundtrack featuring the complete digitally remastered score to both Sonic 1 and 2! 3-CD set features: CD1 [42 tracks, 67:51] - MD Sonic (1991) - MD Sonic 2 (1992) CD2 [38 tracks, 65:15] - Masato Nakamura's demo versions CD3 [4 tracks, 19:26] - 4 variations of 'Sweet Sweet Sweet' (ending theme of Sonic 2)