An old project of mine I found floating around. It's not much, and was meant for an SDS. Click the green flag and watch the game grow. Players will randomly level up, and change appearance to suit. Activity is on the side. As more people "join" the game, everyone shrinks to accommodate them.
Based on this; http://scratch.mit.edu/projects/25222324/ Music by @MrKyruem, @mtcrafter, @TM_, and @venomous_squirrel Sounds by @BobbyF