An additional reward has been added for winning a match in MM: you will receive 5% of your Elo based on your current Elo. If you're at Elo 1, you'll get at least 1 extra Elo; if you're at Elo 60, you'll receive 5% of that Elo (3).
This change was made via cloud without modifying the game files. I'm still waiting to finish the game Doll INC to release a major bug fix patch. You can check the progress on Trello.
https://trello.com/b/0DFFap5d/doll-impostor-community-issues