I am glad Paradox Interactive is taking Linux seriously and is starting to support Linux via Steam. I noticed you've just released Crusader Kings 2 for Linux. It is great to see that, but unfortunately this is really not my favourite genre.
According to phoronix.com there are more Paradox Interactive titles coming to Linux in the future, which is great news if true. For long time I am suspecting Cities in Motion may eventually be ported over to Linux as well, but I give it even more chances now. (CiM Linux support)
My question is whether someone can confirm CiM2 will be available for Linux on Steam or not? I would really love to be able to play that game, please - Wine is not a perfect solution and I don't use/like Windows, though I had to purchase them with my new laptop :'(