Separately from your overall Chillverse rank (Bronze, Silver, Gold, and so on — covered in the Account & Profile section), each individual game also tracks its own skill rank: Beginner, Intermediate, Advanced, and Master.
Winning rounds builds a current streak within that game. Once your streak hits the threshold for the next rank, you're promoted and your streak resets to zero so you can start climbing toward the rank after that. Losing a round resets your current streak back to zero, but it never demotes you — once you've reached a rank in a game, you keep it, even if your next streak attempt doesn't go as well. Chillverse also separately remembers your all-time best streak for each game, even after your current streak resets.