Anniversaries/April 1
From Sega Retro
April 1: April Fools' Day (add)
- 1992 - The Wondermega is released alongside Wondermega Collection for the Sega Mega-CD in Japan.
- 1994 - Dragon Ball Z: Buyuu Retsuden, Monster World IV and Puzzle & Action: Tant-R are released for the Sega Mega Drive alongside Popful Mail for the Sega Mega-CD in Japan.
- 1995 - The long-awaited port of Daytona USA is released alongside EMIT Vol. 2: Inochigake no Tabi and EMIT Vol. 3: Watashi ni Sayonara o, as well as the Racing Controller, Cordless Pad, and the MKU-1 peripherals for the Sega Saturn in Japan.
- 1996 - Dragon Force: Souseiki Hen, a CD, is released in Japan.
- 1997 - MechWarrior 2: 31st Century Combat is released for the Sega Saturn in North America.
- 1998 - Geki! Teikoku Kagekidan and Sega Rally 2, both CDs, are released in Japan.
- 1999 - Shenhua: Jiang Qing Ri Bao Hua Ge and Shenmue Orchestra Version, both CDs, are released alongside Tokimeki Memorial Drama Series Vol. 3: Tabidachi no Uta for the Sega Saturn and GetBass for the Sega Dreamcast in Japan.
- 2000 - Street Fighter Alpha 3 Official Fighting Guide, a book, is released in North America. AeroWings is released for the Sega Dreamcast in Australia.
- 2002 - Shining Soul Kanzen Kouryaku Guide, a book, is released alongside Kenpa for J-Sky (50KB) compatible phones though Sega's Pocket Works portal in Japan.
- 2003 - Space Channel 5 Ver. Haru is released for J-Sky (100KB) compatible phones though Sega's Ulala no Channel J portal in Japan.
- 2004 - Tianshi Xiang is made available to download through Amazon in Japan.
- 2007 - Grand Pianist, a toy, is released in Japan.
- 2008 - Musha Aleste: Fullmetal Fighter Ellinor is released for the Wii Virtual Console in Japan.
- 2009 - Phantasy Star 0 Anthology Comic, a book, is released in Japan.
- 2010 - Sega Retro opens - we're 14 today! Doraemon Waku Waku Sekai Isshuu Game: Asonde Oboeru Chizu Kokki is released for the Advanced Pico Beena alongside Kaitou Reinya in Columns for i-mode 90x compatible phones though Sega's Puyo Puyo! Sega portal and Puyo Puyo Fever Touch for Android devices in Japan.
- 2013 - Sonic the Hedgehog CD Lite is released for Android devices in Japan, North America, Europe, and Australia.
- 2014 - Kotoba Colorful / Uta Yome 575 is released for the Mora streaming platform in Japan.
- 2015 - Uta Yui 575: Azuki to Matcha Character Song Collection!! is made available to download through Amazon in Japan. The Big Box version of Adventures of Sonic the Hedgehog Collector's Set, a DVD, is released in Australia.
- 2019 - Wonder Gravity: Pino to Juuryoku Tsukai is released for Android devices in Japan. Love Thyself - A Horatio Story is released on Steam and Mac OS X devices through Steam in North America and Europe.
- 2020 - Blind Spot IV is released for the Mora streaming platform in Japan.
- 2022 - Sonic the Hedgehog 2 is released in cinemas in the United Kingdom.
- 2024 - You've been in a terrible accident. Please wake up. Please. We love you.