Psychonauts is replayable until you reach 100 rank.
Than you just kinda vacatation there to escape your problems every few monthes.
I just remember that I cried for like, a week, after I got it. (Tears of joy, of coarse.)
And I agree with Holly. I CLUCKIN HATE BLACK VELVETOPIA. And Waterloo world. No matter how awesomely adorable Fred is, getting those figments compleatly sucks. And the snails. I swear I was just about to win the level, than that damn snail knocked me off and I had to start again.