Via dione @ OzBargain. Great game for a great price. FTL: Faster Than Light Advanced Edition is now selling at Humble Bundle for USD $1.99 (~$3 NZD) where you get a Steam key to be installed on Windows, Mac or Linux. Usually $9.99 on Steam site.
FTL: Advanced Edition is provided via Steam key for Mac, Windows, and Linux and is also provided DRM-free for Mac, Windows, and Linux. For key redemption, a free Steam account is required.