/r/gaming, can you recommend a simple, possibly round based, game available on Linux?

Hi /r/gaming,

as a dad of two young kids and due to being self employed, I don't have much time to play games.

But tomorrow I will have 8 hours, and I plan to play a new game!

I am looking for a simple game. My first two (pretty random) picks, Anno 1404 and Age of Empires 2 (HD) aren't available for Linux on Steam unfortunately, so these won't work. (Since Windows 10 came out I felt forced to migrate to Linux, but that is another story.)

In my 4.5 years old Steam account I have two games: Civ V (173 hours) and Civ VI (40 hours). Before that I played Civ 4, I haven't played another game in probably ten years.

Games I enjoyed when I was younger were Diablo 2, Baldur's Gate II and the german classics Fugger 2 and Anstoss 2, oh and THPS 2. (I am obviously into games that end on "2".)

Do you have any recommendations?

Many thanks in advance.