I'm just curious, what is your favorite Tropico game and why?

Tropico 4
I play games in limited free time to be able to sit back and relax.
Tropico 4 is not challenging but deeply satisfying. Perfect for me.

I prefer the first Tropico. I like the more laid-back music used for the soundtrack. I like how the island stays pretty low-key without cars and such. I also like the humor better; the advisor is more understated and ironic, where the later games I've played the comments are more direct.