The Math of Video Game Matchmaking (How ELO & MMR Work)

In this video, I break down the math behind ranking systems and competitive matchmaking in video games. I explain the ELO system by Mr. Arpad Elo, the expected score formula, update formula + K-factor volatility, and how modern games use more advanced ranking systems like Glicko-2 / TrueSkill. I also go through examples, explain the overall goals, and answer questions surrounding these complex mathematical systems. 0:00 Intro 0:55 Matchmaking Goals + Issue 3:53 ELO Rating Formula 9:07 Rating Update Formula 12:47 Modern Games System 15:00 Conclusion + Questions If you’ve ever wondered what’s actually happens behind the scenes when a game calculates your rank or match, this is for you! Subscribe for tomorrow’s video :)