If a game about the horrors of war gives you modding tools, do you not have a moral imperative to mod out all the war? That’s … probably not a question being asked by This War of Mine, but it’s one for all you students of philosophy out there.
The game has been updated to Version 2.0 today, adding a whole load of modding options. There’s a list of what you can change at that link, but basically everything from creating entire scenarios (with new or edited items and weapons), to adding custom music.
A further summary of what you can alter can be found in the following This War of Mine update video.