The agar.io leaderboard shows wich place pepole are in from biggest (#1) to smallest (10#). on mobile you see the top 5 and whatplace you are in out of 100. once you are in the top 5 on mobile you can see who is in sixth place(#6). With comand and editing you can set the lederboard so that it can show countdowns or winning pepole.
you are marked in red if you are on the leader board on Computer. and yellow if you are on mobile.