i also wonder this! my fortresses never survived more than a few seasons in classic because i didn’t understand what was going on, though i loved it just the same. now the steam version has opened up a ton for me i’m excited to see what adventure mode could be like.

I haven’t played it yet, but from what I’ve watched and read, it seems like a totally different game within the same world (you can visit your old forts!). Looks almost like a single player game of D&D.