| 1980s: | 1983 1984 1985 1986 1987 1988 1989 |
| 1990s: | 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 |
| 2000s: | 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 |
| 2010s: | 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 |
| 2020s: | 2020 2021 2022 2023 2024 2025 2026 |
2020 was a year:
Events
- Sega's 60th anniversary event
- The Game Gear Micro launches in Japan.
- The Astro City Mini launches in Japan and North America.
- Sega Interactive merges with Sega Games Co., Ltd and becomes Sega Corporation.
- Sega sells Demiurge Studios back to it's founders.
- COVID-19 Global pandemic has huge impact on Sega's Entertainment Division, causing closures of arcades and losses across the arcade industry.
- The Paramount Sonic the Hedgehog Movie releases. Becomes 6th grossest film of that year, and highest-grossing video game film adaptation in North America.
- Sega works alongside Sanrio to create the Beatcats franchise.
- Persona 5 Royal is the highest rated game of the year on Metacritic.
- Sakura Wars: The Animation releases based on Sakura Wars 2019.
- Panzer Dragoon series gets it's first game since 2002 with a remake of the original title, Panzer Dragoon: Remake
Game releases from Sega:
- Yakuza Like a Dragon (January 16) *
- Yakuza 5 (Febuary 11) **
- Hatsune Miku: Project DIVA Mega Mix (February 13) *
- Bayonetta & Vanquish 10th Anniversary Bundle (February 18)
- Space Channel 5 VR: Kinda Funky News Flash (February 25)
- Two Point Hospital (February 25) ***
- Yakuza 0 (February 26) ****
- Persona 5 Royal (March 31) **
- Phantasy Star Online 2 (April 15) ****
- Yakuza Kiwami (April 22) ****
- Sakura Wars (2019) (April 28) **
- Streets of Rage 4 (April 30)
- Hatsune Miku: Project DIVA Mega Mix (May 15) **
- Phantasy Star Online 2 (May 27) **
- Yakuza Kiwami 2 (July 30) ****
- A Total War Saga: Troy (August 13)
- Yakuza: Like a Dragon (November 10) **
- Football Manager 2021 (December 1)
- Puyo Puyo Tetris 2 (December 8)
- Panzer Dragoon: Remake ******
* Japanese release only
** World Wide release
*** Console release only
**** Xbox release
***** Developed and published by Dotemu, IP licensed by Sega
****** Developed by MegaPixel Studio, Published by Forever Entertainment, IP licensed by Sega