Slitherine

Good morning, I have a question. I would like to install OoB twice on my PC for my own purposes. Is there a way, preferably without the one with Steam?

Not to my knowledge.
One Slitherine and one Steam installation works fine and both can be active at the same time.

Too bad, because I don't trust Steam that much. And when the internet doesn't work, I'm cut off from the game. Also, what happens to the keys when Steam shuts down? Do they not expire and you can no longer use them on PC?

Have you considered GOG?

Actually, no. With GOG I can only buy games, right?

Yes, but they also tend to work very well offline and the slitherine/steam versions definitely don't clash