Whats the best game for single player jewing?
>shop-keeping
Games where you run a store, preferably buying inventory and distributing it. Recettear is an example.
>city management/ exporting goods
Games where you run a colony and export goods. Examples are Dwarf Fortress or Tropico etc.
>trading/traveling
Games where you have some sort of ship and you buy goods at one place and travel to another place and sell goods there. You buy stuff to improve your ship or buy new ships. Examples include Voyage Century and hauling in EVE Online.
Not the best but
Shoppe Keep