Do you know that team-based multiplayer online first-person shooter video game?
No but I would love to learn about it
The game was made/ developed and published by Blizzard Entertainment
Its multiplayer so how many teams or players can compete?
It was made available on all platforms including windows and xbox on in May 2016 
So its relatively new, is it very popular?
Yes it is, in the game, team work together to secure and defend control points on a map 
How many teams can play in one game?