Disclaimer: I am not from South Korea. I am not incredibly familiar with the modern culture or the history. While some of my suggestions are based on credible sources, Wikipedia was used a few times. My suggestion may be entirely misrepresentative of Modern day South Korea, but it is only a suggestion for a videogame.

  

South Korea 

    Contemporary


Affinity Trait - Merchant 


Legacy Trait - +1% money per # of ports on all cities


Emblematic Unit - Korean UDT/SEALs 

  • Stealth Unit

  • +1 combat strength for every other 2 Korean UDT/SEALs in army 

    • Example: if 3 Korean UDT/SEALs in one army, each unit gets +1 combat strength

  • Base Combat Strength - 57


Emblematic District - Korean Port

  • +30% yield on bordering Makers quarter, Market Quarter, or Research Quarter

  • Must be built on Coastal Waters 

  • +2 money for every naval trade route on city

  • -10 stability 

  • Count as Market Quarter


Note - I did not focus on the DMZ or the relationship between North and South Korea.

- I also did not focus on the advanced technological industry of Korea because the Japanese Culture in the Game already has an emblematic district called the Robotics Lab.