With under a week left before Selection Sunday, it’s time to start brushing up on your college basketball knowledge. As you put together your list of top teams, favorites and potential bracket busters, why not put all that knowledge to the test with our Bracket Challenge game?

The game launches today, and you can register by visiting this link. The brackets open on Sunday, March 15th, after the tournament field has been released on the Selection Show on CBS.

If you need a refresher on how to play our bracket game or a quick tutorial on how to sign up, take a look at the video above.