Respawn is currently in talks with Aspyr to possibly bring Titanfall to Mac OS and platforms. Titanfall launched on PC only, but some fans have been asking about a Mac version.
Vince Zampella tweeted stating that they are talking to Aspyr about it.
@TZB17 We are talking to Aspyr, they should do it
— Vince Zampella (@VinceZampella) March 13, 2014