I have read it runs fine on steam but would rather buy it on GOG due to the lack of DRM.
I have it. Installed/updated using Heroic. Works perfectly. I use the latest Proton-GE with it, and run the Vulkan backend (seems to have fewer bugs for me on AMD GPU than the DX11 version).
Running the latest Mint with the 6.1 OEM kernel and kisak-mesa drivers.
My wife has it installed with Galaxy on Windows. DRM-free means we can play co-op over LAN instead of being stuck with split-screen.
The steam version is also DRM free IIRC.
Why does that make you able to play co-op over LAN?
No, Steam is a store and a content delivery mechanism. It has the option to add DRM, which developers may choose to do, but don’t have to. There are games which can be purchased on Steam and which can be launched without the Steam client, just like any normal program.
Because she has my copy of the game installed on her PC too, so with one copy we’re able to play together on two different computers instead of sharing a screen.
The lack of DRM means GoG doesn’t care about whether I’m online on more than one PC. Steam does, meaning one of us would need to be in offline mode. In games that implement the Steam DRM this would mean that the person in offline mode wouldn’t be able to play multiplayer.
Apparently that isn’t the case with this game but I didn’t realize that.