What is MMR gaming?

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Tags

1. #history
2. #ratings
3. #players
4. #medals
5. #rating
6. #determines
7. #value
8. #showing
9. #player
10. #matchmaking
11. #their
12. #seasonal
13. #level
14. #highest
15. #after
16. #allows
17. #listed
18. #skill
19. #based
20. #leaderboards
21. #ranked
22. #world
23. #changes
24. #match
25. #ranking