I don't understand how the Swamp could become a "favorite." It's full of "witches" and heroes with animal faces. The castle is mossy, and the swamp landscape is depressing. People choose the Swamp as a fortress because of its strength, reliability, and effectiveness, not because of personal preference... unfortunately. Moreover, they even choose combat-oriented heroes as their main characters. But Solmyr for a tower or Dimer... that's a different story. I wonder if anyone even started playing with the Swamp faction. Among my favorite factions, it's definitely an outsider (I'm looking at the offline statistics, where everyone started). And Necropolis and Castle are in a league of their own.