Short answers, pulled from the story.
Blizzard Entertainment released the original Overwatch on the 24th of May 2016. The game launched on PC and eighth-generation consoles like PlayStation 4 and Xbox One before a Nintendo Switch version arrived later that year.
The game features heroes divided into three distinct classes: Tanks, Damage, and Support. Each class contained sub-roles like Initiator or Medic to further specialize player strategies, and Season 2 shifted the standard match format to one tank, two damage players, and two support players.
Sixty years into the future, humanity faced an existential threat from artificial intelligence robots called Omnics when facilities known as omniums began producing hostile units. The United Nations eventually assembled Overwatch as a strike team led by Reyes and Morrison to quell the uprising.
Blizzard Entertainment relied on transmedia storytelling including animated shorts like Recall that appeared on the 21st of March 2016. A comic series ran from 2016 to 2018 featuring sixteen issues, and young-adult novels such as The Hero of Numbani appeared on the 2nd of June 2020.
By 2023 the Overwatch League had collapsed due to a lack of interest from owners and disruptions caused by the COVID-19 pandemic. Blizzard replaced the league in 2024 with the Overwatch Champions Series which operated as three regional circuits instead of permanent franchises.
The original game became the seventh-best selling video game of all time with over 60 million lifetime players counted by Blizzard in 2021. A report from Bloomberg published in 2022 stated sales exceeded 50 million copies before Overwatch 2 launched.