Sega AM4

From Sega Retro

Sega AM4
Founded: 1991
Defunct: 1999
Merged into: Sega Mechatronics (1999)
Headquarters: Japan

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Sega Amusement Machine Research and Development Department #4, commonly known as Sega AM R&D #4 or Sega AM4, was a research and development division within Sega. The AM4 name was adopted in 1990 after the internal AM and CS teams were separated. It was previously known as R&D4.

Unlike Sega AM1, Sega AM2 and Sega AM3, Sega AM4 was responsible for the creation of arcade cabinets, and thus outside of an advisory role, had no influence in the development of video games. However with machines like the UFO Catcher and other mechanical engineering archievments it gained noteriety on it's own as well.

AM4 produced the vast majority of Sega arcade machines of the 1990s. AM4 credits remain inconsistent however, with it sometimes being credited and other times not[1].

AM4 continued its role as Sega Mechatronics from 1999.


Softography before AM4

World Derby BD



Multi-purpose arcade cabinets


Royal Ascot BD

Western Dream BD

X Board

Bingo Party BD/M1

Castle Coaster BD


C-GAL/Sega Titan Video


Dream Catcher BD



Sega System C

Sega System 16B

Y Board

Sega Titan Video

Sega H1 Board


Multi-purpose arcade cabinets


Domestic Sega studios
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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