Last updated at 13:34

American Super Bowl - Seattle Seahawks v Denver Broncs

To enjoy the CBBC Newsround website at its best you will need to have JavaScript turned on.

The countdown has begun to the so-called 'greatest show on Earth', but what is it?

The US Super Bowl apparently.

Around one billion people from all over the world will be tuning in to watch the American football sporting event.

This year the Seattle Seahawks are up against the Denver Broncs.