Its top 10 in Korean net cafe, the games been running for over 20 years from a billion dollar game company, its quite popular

Dota 2 and overwatch does something similar, it’s simply a quick click after the match above the players name.

Overwatch rewards you with battle pass exp and a symbol showing how many times you’ve been commended

Dota 2 simply shows you’ve had less then X amount reports and your behaviour score after X amount of matches