It's too bad the native Linux versions of old id Tech 0/1/2/3/4 games aren't being posted on Steam.
And worse, for the old id Tech 0/1 games it's not even the Windows version, nor a native emulator, it's running the DOS version in the Windows version of DOSBox in Proton.
Although now I notice this is actually a remake, not the id Tech 1 original.