AM Annex

From Sega Retro

Fast facts on AM Annex
Founded: 1995
Defunct: 2000
Merged into: Sega Rosso

AM Annex(AM分室) was a development team within Sega which formed in 1995Media:DCM_JP_20001215_2000-40.pdf[1].

AM Annex was formed by Tetsuya Mizuguchi after discussions were made to split up the then-100 man Sega AM3. The majority of AM Annex's staff had worked on Sega Rally Championship and Manx TT SuperBike, with their first creation being 1996's Sega Touring Car Championship. They also had a hand in Sega Rally 2. They were re-branded AM12 in September 1998[2] and again renamed to Software R&D Dept. #5 in May 1999.Media:DCM_JP_19991119_1999-36.pdf[3] In 2000, it was spun off as Sega Rosso.Media:DCM_JP_20001215_2000-40.pdf[1][4]

Simlar to AM3, AM Annex were credited on the covers of European Sega games.


Model 2



Model 3


  1. 1.0 1.1 File:DCM_JP_20001215_2000-40.pdf, page 91
  2. File:SSM_JP_19980911_1998-25.pdf, page 204
  3. File:DCM_JP_19991119_1999-36.pdf, page 14-15
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