All the stars have disappeared, what will you do!? There's only one thing TO do... Roll a ball around and picking up various objects that will in turn, replace the stars and constelations. You can pick up things such pineapples, giant squid and sailboats, it just depends on how large your katamari is :) Now doesn't that sound like fun?
Thanks to nikki and shanno, I now have been introduced to one of the coolest games ever...