Answer:
Every night I'm told what to do and each morning I do what I'm told. But I still don't escape your scold
I have a little house in which I live all alone. My house has no doors or windows and if I want to go out I must break through the wall.
I spend most of my day eating white. When I am quick enough I get rewarded with fruit and something blue. In a dark room with blue walls I run from the ghosts that roam the halls
I have a few points but we're not competing. I'll help you win when you're eating.
Alone I am 24th with a friend I am 20. Another friend and I am unclean.
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.