Can’t convince your significant other you need to be playing more Halo 3? How about a Halo tournament to end breast cancer!

The Cave Girls are hosting their 2nd Annual “Fight Like a Girl” Halo tournament. Proceeds from the tournament benefit the Susan G. Komen For a Cure breast cancer foundation. Tournament founder Kari Toyama explains how it all started in this interview at United for Pink.

They asked me, “Kari, would you like to participate in a bake sale?” I said, “Um, no.” So they asked, “Is there anything you are involved in that could potentially raise money?” I thought, “Hey, I love to play ‘Halo.'”

Get the full tournament details from the Cave Girls. Even if you don’t play, you can still donate!