Hi,
I'd like to know if there is some kind of a demo version of the game available somewhere? I'm not buying the game if I don't try it out before (because it might not work on my system, or it might work slowly, or something like that). I'd just like to try a demo/trial version of the game. Cheers!

There's no demo of Frostpunk, barely any game has a demo version these days. You can check minimum system requirements before buying, check it out at Can You Run It or post your specs here and ask for help. GOG has Money Back Guarantee Policy but it doesn't cover not meeting minimal specs of the game. From my experience the game is fairly well optimized.

Hm, very well, Money Back Guarantee Policy seems fair enough to me. I guess I'll go for it!