McLain sang "Still Alive" and "Want You Gone", the ending credits songs to Portal and Portal 2, respectively, both of which were written by Jonathan Coulton. She sang "Cara Mia Addio" at the end of Portal 2. It is sometimes called the "Turret Opera". In December 2011, McLain won the Spike Video Game Award in the category "Best Performance by a Human Female" for her voice acting as GLaDOS in Portal 2.