I walk on four legs in the morning, Two legs in the afternoon, And three legs at night, What am I?

You’ll find me in Mercury, Earth, Mars, Jupiter, Saturn and Uranus. But never Neptune, or Venus. What am I?

I seldom seem like very much, until there’s twelve of me.

Found in fever, but never in temperature. When this takes effect, the answer becomes clear and direct. Though chance may offer alternatives, only one choice persists.

A maze, labyrinth, riddle, or box, I challenge your mind through passages twisted or plain. Each may take on my name, turning thought and confusion into a game.