Basically lifetime Account, For round 31 I believe any accounts signed up should also have a feature of a "lifetime account", This being a seperate usernamed, i mean you're nickname then followed by you're selected password and you good to go
It should ATLEAST contain Score,Value,Roids,Each planet, Top 500 Lists or infact top 1000. Then each round when re-signing up, you use you're nice and password for this "lifetime account" and then it will be accumulated for all rounds but also save details on the individual rounds. So after Round 32 you would have the Highest scoring playes of the 2 rounds combined and then continues forward for every future round, but also saving each round in the planetarion database/website rarther then wiki, which is ok but alot better to have a "highscores" section or something similar to
www.planetarion.com overview page.