Founded: 1998Defunct: 2004Headquarters: Japan
Hitmaker is a former development studio owned by Sega, built on the remains of Sega AM3.
Demerged: Sonic! Software Planning | Nextech | SIMS | ???
Defunct: Esco Boueki | Megasoft | ???
Miscellaneous: Sega Toys? considered a separate company from the main Sega | CRI? did they develop anything between them being bought by Sega and being merged into AM2?
Defunct: Sega Electronics | Sega Technical Institute | Sega Midwest Studio | Sega Interactive | SegaSoft | Sonic Team USA/Sega Studios USA | ???
Defunct: Sega Racing Studio