Florien
This one is really interesting in how its set up, though many mechanics are kind of opaque (in particular, it's not made clear that you can create new trade goods, nor that if you deliver enough to ports without them (in most cases) they will start carrying that good too.) However, it is still very good despite occasional opacity.
This is the odd one of the tradewinds series, in that it's about land trade, and trading for money isn't actually that effective generally without extensive time investment, and pack animals and soldiers are disconnected entirely and have interesting behaviors and tradeoffs. However, while this does make sandbox play kind of dull, it adds significantly to the story mode, so it balances out.
2009
2009
TBD
2008
The writing is all over the place, but it's charming in a "all of these people are awful in their own way" way. The gameplay itself is the issue, where the game has fifty good ideas and then tries to do all of them at once, and also has a party member who renders some of those very ideas redundant anyway, leading to the game switching frequently between states of "you are effectively invincible" and "any mistake will kill you".
1994
2017
2016