At a glance
The Darkness II 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.
The Darkness II came out on Steam on 9 February 2012, made by Digital Extremes.
What your Mac needs
The Mac requirements list only Intel.
Minimum macOS in the Steam requirements: 10.6.8.
Steam requirements list at least 2 GB of memory for The Darkness II; 4 GB recommended.
Allow about 10 GB of disk space for the Mac version.
How to play
Open Steam for Mac and install The Darkness II 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 The Darkness II from there (10 GB). We have not tested it ourselves.
The Windows version through Uncork needs a Mac with Apple Silicon (M1 or newer).