Rating

Rating is the "unit" for Player vs. Player (PvP) battles. Each Quick Match (Direct Challenges don't change rating) gives rating when you win, and takes it when you lose. The amount of rating depends on the opponents current rating, the Strength difference and if the opponent is a real player or a Bot.
Depending on the rating, each player gets assigned a rank from 1-100. Ranks over 100 are not displayed.
Each Sunday midnight the top 5 players of the week are determined by their rank/rating, given prizes and everyone's rating is reset to the default 1500.