Comrades and Barons: Solitaire has joined five other historical game in the Modern History Bundle. This includes games like Attentat 1942, Radio General and other highly rated games of very various generes. You can get the bundle here:
https://store.steampowered.com/bundle/24424/Modern_History_Bundle/
Comrades and Barons: Solitaire is now in the Modern History Bundle!
Source: Steam Community (opens in a new tab)