Sonic the Hedgehog CD [Model G-6021]

Sega Mega-CD published 30 years ago by SEGA Enterprises, Ltd.

Listed in MAME

Sonic the Hedgehog CD © 1993 Sega Enterprises, Limited.

The story follows Sonic the Hedgehog as he attempts to save an extraterrestrial body, Little Planet, from Doctor Robotnik. As a Sonic the Hedgehog series platformer, Sonic runs and jumps through several themed levels while collecting rings and defeating robots. Sonic CD is distinguished from other Sonic games by its time travel feature, a key aspect to the story and gameplay. By traveling through time, players can access different versions of stages, featuring alternative layouts, music, and graphics.

Goodies for Sonic the Hedgehog CD [Model G-6021]
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Game ID: G-6021
Package ID: 670-3563
CD ID: 670-3561

Data on CD take about 338 MO.


Sonic the Hedgehog CD was released on September 23, 1993 in Japan. It is known outside Japan as simply "Sonic CD".

The sonic team built Sonic CD using the original Sonic the Hedgehog code as a base, the game itself was conceived as an enhanced port of Sonic 2 for the Mega CD. At this point, it was codenamed Super Sonic and would feature additional levels, a fully orchestrated soundtrack, sprite-scaling effects, and animated cutscenes.

Meager sales of Sonic 2 in Japan and the team having its own vision resulted in the reworking of the port. It was titled CD Sonic the Hedgehog first before being renamed Sonic CD. Ohshima does not consider Sonic CD a sequel to the previous two Sonic games, although artist Yasushi Yamaguchi said players may assume that its story is set between Sonic the Hedgehog and Sonic 2.

Sonic CD marks the debuts of Amy Rose and Metal Sonic, both designed by Hoshino. Although Hoshino created Amy's in-game graphics, many staff members contributed ideas to her design. Her headband and trainer shoes reflected Ohshima's tastes while her mannerisms reflected the traits Hoshino looked for in women at the time. Hoshino designed Metal Sonic in response to Ohshima wanting a strong rival for Sonic. Hoshino had a clear image of Metal Sonic in his mind from the moment he was briefed, and his design emerged after only a few sketches. The character graphics were created using Sega's proprietary graphics system for the Mega Drive, the "Sega Digitizer MK-III", featuring a bitmap and animation editor. The team mostly used Macintosh IIcis. Graphics data was stored on 3.5-inch floppy disks, which were handed to the programmer to work into the game.

Ohshima cited Back to the Future as an influence on the time travel. Ohshima hoped for the time period to change instantly with a 'sonic boom' effect, but the programmers argued this was impossible and produced a loading sequence instead.

Sega did not pressure the team developing Sonic CD as much as the one developing Sonic 2. Ohshima felt this was because Sonic CD is not a numbered sequel; he considered it a recreation of the original game.

Goodies for Sonic the Hedgehog CD [Model G-6021]
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1. Sonic The Hedgehog [Model G-4049] (1991, Mega Drive)
2. Sonic the Hedgehog 2 [Model G-4088] (1992, Mega Drive)
3. Sonic the Hedgehog CD [Model G-6021] (1993, Mega CD)
4. Sonic the Hedgehog 3 [Model G-5531] (1994, Mega Drive)
5. Sonic & Knuckles [Model G-4124] (1994, Mega Drive)
6. Chaotix [Model GM-5003] (1995, 32X)
7. Sonic The Hedgehog 4 - Episode I (2010, WiiWare)
8. Sonic 4 The Hedgehog - Episode II (2012, Google Play)

1. Segasonic The Hedgehog (1992, Arcade)
2. Sonic 3D - Flickies' Island [Model GS-9143] (1999, Saturn)

1. Sonic Adventure (1999, Dreamcast)
2. Sonic Adventure 2 (2001, Dreamcast)
3. Sonic Adventure 2 - Battle (2001, Gamecube)
4. Sonic Adventure DX - Director's Cut (2003, Gamecube)
5. Sonic Heroes (2004, Gamecube)
6. Sonic The Hedgehog (2006, PS3)
7. Sonic Unleashed (2008, PS3)
8. Sonic and the Secret Rings (2007, Wii)

1. Sonic Advance (2001, GBA)
2. Sonic Advance 2 (2002, GBA)
3. Sonic Advance 3 (2004, GBA)
4. Sonic Rush (2005, Nintendo DS)
5. Sonic Rush Adventure (2007, Nintendo DS)

1. Sonic N (2003, N-Gage)


Developed by the Sonic Team.

Executive Producer: Hayao Nakayama
Produced by: Minoru Kanari, Makoto Oshitani
Director: Naoto Ohshima (Bigisland)
Program Director: Keiichi Yamamoto
Art Director: Hiroyuki Kawaguchi
Sound Director: Yukifumi Makino
Game Designers: Hiroaki Chino (TINON), Kenichi Ono (AX), Yuichiro Yokoyama, Takao Miyoshi, Akira Nishino
Character Designer: Kazuyuki Hoshino
Landscape Designers: Hiroyuki Kawaguchi (HIRO.K), Takumi Miyake, Masahiro Sanpei, Masato Nishimura, Hideaki Kurata
Special Stage Designers: Kazuyuki Hoshino, Yasushi Yamaguchi
Special Stage Programmer: Keiichi Yamamoto
Animation Programmers: Yuichiro Mine (PROTO.2), Eiji Horita
Animation Visual Directors: Hiroyuki Kawaguchi (HIRO.K), Masahiro Sanpei
Visual Design: Kazuyuki Hoshino, Takumi Miyake
Chief Programmer: Matsuhide Mizoguchi
Programmers: Yuichi Matsuoka, Hiroshi Takei, Tatsuya Satoh (HIC), Noritaka Yakita (HIC)

Producers: Yasuo Yamaguchi, Mutsumi Kido
Chief Key Animator: Hisashi Eguchi (Studio Junio)
Key Animators: Tetsuya Kumagai, Toshiyuki Komaru, Yasuyuki Shimizu, Ichiro Furuichi, Kenji Kajiwara
Art Director: Shinzo Yuki
Camera Director: Masaru Banzai
Assistant Production Manager: Kouichi Hirose
Director: Yukio Kaizawa
Production Manager: Koji Sekiguchi
In Cooperation With: Studio Junio
Produced by Toei Animation Co. Ltd.

Producer: Daikou Nagato (Being Co. Ltd.)
Director: Ryo Watabe (Being Co. Ltd.)
Recorded at Studio Birdman, Mod Studio.
BGM Composer and Arranged: Naofumi Hataya, Masafumi Ogata
Sound Effect & Sound Program: Yukifumi Makino

Opening Theme - Sonic You Can Do Anything
Lyrics by: Casey Rankin
Music by: Masafumi Ogata
Vocal: Keiko Utoku

Ending Theme - Cosmic Eternity [Believe In Yourself]
Lyrics by: Casey Rankin
Music by: Naofumi Hataya
Vocal: Keiko Utoku

Plan: Hiroaki Chino
Sprite Design: Kazuyuki Hoshino
Scroll Design: Yasushi Yamaguchi
Sound: Masafumi Ogata
Program: Keiichi Yamamoto
Special Thanks: Masahhiro Sanpei (3pei), Masato Nishimura (Majin), 100Shiki, Shuji Takahashi

Promoter: Hiroyuki Tanaka
Package Designer: Youichi Takahashi, Hayato Takebayashi
Illustrations: Kazuyuki Hoshino
Special Thanks: Naofumi Hataya, Masafumi Ogata, Daikou Nagato (Being Co. Ltd.), Hiroshi Kubota, Rieko Kodama (Phenix Rie), Yoshiaki Kashima, Takenobu Mitsuyoshi, Masaru Setsumaru, Hijiri Aoki, Steve Ray Burton, James Spahn, Kounosuke Yoshio, Tomoko Sasaki, Aki Kamata, Masato Nishimura, Akira Funada, Fujio Minegishi, Jina Ishiwatari Tsukahara, Katsufumi Yoshimori, Tetsuo Akagi, Kaeko Ito, Hiroshi Nakatani, Hiromi Fukuda, Etsuko Yamada, Ryuichiro Kutsuzawa, Takashi Iwade, Michikazu Tamamura, Masumi Uchida, Tohru Watanuki, Makiko Suzuki


japan Sony PS2 (aug.11, 2005) "Sonic Gems Collection [Model SLPM-66074]"
japan Nintendo GameCube (aug.11, 2005) "Sonic Gems Collection [Model DOL-G2XJ-JPN]"


Game's CD.