Anniversaries/August 21
From Sega Retro
August 21 (add)
- 1990 - Insector X, a CD, is released in Japan.
- 1991 - Cotton and Strike Fighter, both CDs, are released in Japan.
- 1993 - Gaegujangi Kkachi is released for the Sega Master System in South Korea.
- 1996 - NiGHTS into Dreams is released for the Sega Saturn in North America.
- 1997 - Sega Vocal Entertainment, a CD, is released in Japan. Sega Worldwide Soccer 97 is released for Windows PCs in Europe.
- 1998 - Deep Fear Perfect Guide, a book, is released in Japan.
- 2000 - MagForce Racing is released for the Sega Dreamcast in Spain.
- 2001 - Sega Bass Fishing 2 is released for the Sega Dreamcast in North America. Sakura Taisen is released for Windows PCs in Taiwan.
- 2003 - Advanced Daisenryaku IV is released for Windows PCs in Japan. Flicky is released for J2ME compatible phones in North America.
- 2007 - Sonic the Hedgehog 3 is released for the Wii Virtual Console in Japan.
- 2009 - Sega Republic opens in Dubai with the debut of the Large attraction Sonic Hopper!.
- 2013 - Uo: Nanatu no Mizu to Densetsu no Nushi is released for the PlayStation 3 alongside 3D Bare Knuckle: Ikari no Tetsuken for the Nintendo 3DS in Japan.
- 2015 - Daydreamer: Awakened Edition is released on Steam in North America, Europe, and Australia.
- 2018 - Shenmue I & II is released for the PlayStation 4, Xbox One, and Steam in North America, Europe, and Australia.
- 2019 - The Blu-ray BOX version of Phantasy Star Online 2: The Animation, a Blu-ray, is released in Japan.
- 2021 - Technosoft Music Collection: Thunder Force IV, a CD, is released alongside Dracula no Shiro, an aftermarket Sega Game Gear game, in Japan.