Madde Lv 1
What about replacing the <15 and <150 puzzles with some of the first played puzzles?
We know the old top scores of them and the goal could be: "Try to beat the old best!" or "Try to get into the old top five!"
And if one makes it, he gets a reward (maybe a little gold, silver or bronce medal on a player's page, depending on how good his score was).
You could also see the progress of the folding abilities of the players (and the program) since foldit started.
