Sega CS3 (2008-current)

From Sega Retro

Sega CS3 (2008-current)
Founded: 2008-05-01
Merged into: Online R&D
Headquarters: Japan

Sega CS3 is the continuation of GE2 and GE3. It handles a large amount of the output of Sega on consumer platforms, frequently collaborating on co-producing and co-developing with external developers in Japan. Over time, CS1 had the Yakuza franchise, CS2 had the Sonic the Hedgehog franchise, with each respective franchise getting large dedicated production teams. Therefore, CS3 gets alot of the "rest" of the games that Sega produces, including archive and retro re-releases, like 3D Classics.

Free-to-Play and mobile games branched out to Online R&D.

Sega CS3 was dissolved sometime 2018 and absorbed into CS1 and CS2.


Former Members


PlayStation 2

Nintendo DS

PlayStation Portable

Xbox 360

Xbox Live Arcade



PlayStation 3

PlayStation Network

Nintendo 3DS

PlayStation Vita

Xbox One

PlayStation 4


Domestic Sega studios
84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20
CSK Sega Sammy Holdings
Sega Enterprises, Ltd. Sega Corporation Sega Games & Interactive
Sega R&D 1 Sega AM1 R&D #1 WOW Entertainment Sega WOW Sega AM1
Studio 128 Sega R&D 8 Sega AM2 R&D #2 AM2 of CRI Sega-AM2 Sega AM2
Sega AM11 R&D #4 Amusement Vision New Entertainment Sega CS1
Ryu ga Gotoku Studio
DigitalRex AM Plus
Sega AM3 R&D #3 Hitmaker Sega AM3
AM Annex R&D #5 Sega Rosso
Sega AM4 Sega Mechatro Product R&D
N. Pro. R&D
Sega AM5 Mirai R&D Family Entertainment
Sega AM6
Sega R&D 2 Sega CS Sega CS1 R&D #6 Smilebit Sega Sports Design
Megasoft Team Andromeda
Sega PC Online R&D
Sega CS2 R&D #7 Overworks GE2 Sega CS3
Sonic Team
Sega CS3 R&D #8 GE1 Sega CS2
R&D #9 United Game Artists
Sega Sound Team
Sega Digital Media Wave Master Wave Master (label)
Mobile Content R&D Sega Networks
Visual Entertainment Marza Animation Planet