For the moment, yes! I just ran the installer with Lutris + wineGE 8-26 and it has been working fine for the few hours I played. No telling if it will change though.

The listed countries look like countries that often get regional pricing. Was the geo blocking to allow for regional pricing in those areas?

Single player or multiplayer coop up to 3 people. It’s not a mmo or anything of that nature, no. Multiplayer progression works like in Grim Dawn where the host progresses their game and character; people that join don’t progress their own campaign progress, but do progress their character.

Edit: more info.