This is a collection of internal materials from Sega of America, notably documenting the development of Sonic the Hedgehog for English-speaking audiences. The materials are dated between 1990 and 1994.

The Game Developers Conference (GDC) collection contains five boxes of VHS and Betacam tapes of recordings from various years of the GDC, including keynote speeches, sessions, presentations, and awards, all of which were compiled and donated by Jason Scott of the Internet Archive.

This collection consists of oral history interviews with video game and pinball industry professionals conducted by Ken Horowitz, video game scholar and author. The audio recordings are dated from 2006 to 2023. The materials are comprised of digital audio recordings and transcripts.

The Tengen, Inc. records contain artwork, promotional and trade show materials, posters, correspondence, photographs, assembly drawings, and schematics. A sizeable portion of this collection covers marketing and publicity in the form of sell sheets. The bulk of the materials are dated between 1987 and 1994.