It was pretty much a given that Dwarf Fortress was going to be popular on Steam, but the smash hit it has become is quite a surprise on just how well it's doing.
Currently it's the #1 top selling game on Steam, and according to the head of the publisher on Twitter, it smashed through somewhere around 160K sales in under 24 hours that they expected to hit in around 2 months. On Steam it also already has an Overwhelmingly Positive user rating from over 6,000 people. On Metacritic, it also has a very high score from both journalists and users.
As I already confirmed, it works out of the box on Steam Deck and Linux desktop with Proton but going by their new FAQ, they do still fully plan Native Linux support as they have "already contacted a trusted programmer who will be looking into it". They're also reducing the price in a couple of regions that were hit hard by inflation.
You can buy it on Steam.