At a glance
Spec Ops: The Line has a Mac version: Steam sells it for macOS. The Mac requirements list only Intel: on Apple Silicon Rosetta 2 runs it, and old Mac versions sometimes do not start on current macOS. Try it in Steam for Mac first.
Spec Ops: The Line came out on Steam on 29 June 2012, made by YAGER.
What your Mac needs
The Mac requirements list only Intel.
Minimum macOS in the Steam requirements: 10.7.5.
Steam requirements list at least 2 GB of memory for Spec Ops: The Line; 4 GB recommended.
Allow about 6 GB of disk space for the Mac version.
How to play
Open Steam for Mac and install Spec Ops: The Line as usual.
If the Mac version will not start, you can install the Windows version through Uncork: download Uncork, sign in to Steam and install Spec Ops: The Line from there (6 GB). We have not tested it ourselves.
The Windows version through Uncork needs a Mac with Apple Silicon (M1 or newer).
Spec Ops: The Line uses DirectX 9.0: Uncork renders it with its built-in graphics.