“What is Overwatch?”
“Overwatch is a multiplayer first-person shooter developed by Blizzard Entertainment. The game emphasizes cooperative gameplay using a cast of various “heroes”, each with their own abilities and roles within a team.
The game was released on May 24, 2016 on Microsoft Windows, PlayStation 4, and Xbox One.”
(From wikipedia https://en.wikipedia.org/wiki/Overwatch_%28video_game%29 )
You can buy it on PC or the various consoles here:
Overwatch full game playlist: