What platforms are Breach on?
How do I run Breach on a Mac?
Currently, Breach is only available for PC. There is no ETA at this time for availability on other platforms.
While Breach needs Windows to play that doesn't mean Mac owners are out of luck.
There several different Windows emulators, like BootCamp, that allow Mac owners to run a copy of Windows.
If you'd like to use an emulator, make sure your Mac meets the system requirements for Breach as well as the emulator.