Sega CS1

From Sega Retro

Fast facts on Sega CS1
Founded: At least 1994
Merged with: Smilebit
Headquarters: Japan

Sega Consumer Research and Development 1 or Sega CS1 is a video game research and development division within Sega. Sega is thought to have consumer divisions every since they began developing for non-arcade systems, however it unknown which games were attached to CS1 during the SG-1000, Sega Master System and Mega Drive eras.

CS1 had two separate sub-divisions known as Team Aquila, which focused on sports related games such as ', and Team Andromeda, which produced the ' series of games -- both of which gained the CS1 a wide amount of notoriety as being two of the best displays of the Sega Saturn's capabilities during it's heyday. In 1995, Sega also established an internal PC division, dedicated to porting PC titles. In 1999, CS1 merged PC division and renamed Sega Software R&D Dept. #6.Media:DCM_JP_19991119_1999-36.pdf[1] In 2000, the division was spun off as Smilebit.

Integrating back into Sega in 2004, the division changed heavily, with Smilebit's non-sports team merging with Amusement Vision's, and the Amusement Vision staff completely loosing it's arcade focus -- therefore technically making the current CS1 a combination of the two divisons. For a brief period, the Yakuza development team were known as the New Entertainment R&D Department; however, the name changed back to CS1 in 2008. In 2011, the Yakuza team got re-branded as Ryu ga Gotoku Studio.


Sega Saturn


PlayStation 2


Nintendo DS

PlayStation Portable

Xbox 360


PlayStation 3

Nintendo 3DS

PlayStation Vita

Wii U

PlayStation 4



Magazine articles

Main article: Sega CS1/Magazine articles.


  1. File:DCM_JP_19991119_1999-36.pdf, page 15
Sega Development Studios
Japan Production and Engineering Department 1965-1984
Japan R&D; 1984-1990
Team Shinobi, Sega AM2
Japan, 1990 - 1999
Amusement Machine R&D Consumer R&D
Sega AM1 | Sega AM2 | Sega AM3 | Sega AM4 | Sega AM5 | Sega AM6 | Sega AM11 formed in 1995 | AM Annex/AM12 formed in 1998 Sega CS1 (Team Andromeda | Team Aquila | Team Ara) | Sega CS2 | Sega CS3 (Sonic Team) | Sega CS4 | PC Software R&D | Digital Media Unit
Japan; 1999-2004
R&D1 (WOW Entertainment/Sega WOW) | R&D2 (Sega AM2) | R&D3 (Hitmaker) | R&D4 (Amusement Vision) | R&D5 (Sega Rosso) | R&D6 (Smilebit) | R&D7 (Overworks) | R&D8 (Sonic Team) | R&D9 (United Game Artists) | Sega Digital Media (Wave Master) | Sega Mechatronics | Sega Mirai R&D | Digital Rex
Japan, 2004 - 2008
Amusement Machine R&D Consumer R&D
Sega AM1 | Sega AM2 | Sega AM3 | Sega AM Product | Sega AM Plus | Family Entertainment R&D Sega GE1 (Sonic Team) | Sega GE2 | Sega GE3 | Sega NE | Sports Design R&D | Mobile R&D
Japan, 2008 - current
Amusement Machine R&D Consumer R&D
Sega AM1 | Sega AM2 | Sega AM Product | Mobile R&D formed 2010 (Sega Networks) | N. Pro. R&D formed 2013 Sega CS1 (Ryu ga Gotoku Studio) | Sega CS2 (Sonic Team) | Sega CS3 (Online R&D formed 2010) | Mobile R&D (Sega Networks)
North America
Three Rings Design | Relic Entertainment | Demiurge Studios

Defunct: Gremlin Industries/Sega Electronics | Sega Technical Institute | Sega Midwest Studio | Sega Interactive | SegaSoft | Sonic Team USA/Sega Studios USA

The Creative Assembly | Sports Interactive | Hardlight | Amplitude Studios

Defunct: No Cliché | Sega Racing Studio

Sega Studios China formed 2002