Founded: 1998Defunct: 2004Merged with: WOW Entertainment (2004)
Overworks was a video game development division within Sega and a continuation of the studio formerly known as Sega AM7.
In 2004, Overworks was merged with Sega's WOW Entertainment division to form Sega WOW.
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