Your season, measured by the client itself: time played, servers joined, blocks placed and mined, distance travelled. Climb the boards, then open any player to see their full recap.
Every number here is measured on your own machine while you play, so it can be checked: hours in game, connections to a server, blocks placed, blocks mined, distance walked. Nothing a server announces about you (wins, games, scores) is ranked, because none of it can be verified.
Best runs set in the arcade of the Polar client. One entry per player and per difficulty: only a personal best is kept, and at equal score the quicker run wins.