Civilization V Customisation Wiki

Siam led by Rama V is a custom civilization mod by JFD, with contributions from Sukritact, DarthKyofu, DMS, Urdnot and Poom.

This mod requires Brave New World.



The Rattanakosin Kingdom (of Siam) is the fourth and present kingdom in the history of Thailand. It was founded in 1782 with the establishment of Rattanakosin as the capital city.

The maximum zone of influence of Rattanakosin included the vassal states of Cambodia, Laos, Shan States, and some Malay kingdoms. The kingdom was founded by Rama I of the Chakri. The first half of this period was characterized by the consolidation of the kingdom's power and was punctuated by periodic conflicts with Myanmar, Vietnam and Laos. The second period was one of engagements with the colonial powers of Britain and France in which Siam remained the only Southeast Asian state to maintain its independence.

Internally the kingdom developed into a modern centralized nation state with borders defined by interactions with Western powers. Economic and social progress was made, marked by an increase in foreign trade, the abolition of slavery and the expansion of formal education to the emerging middle class. However, the failure to implement substantial political reforms culminated in the 1932 revolution and the abandonment of absolute monarchy in favor of a constitutional monarchy.

Rama V[]

Chulalongkorn, also called Phrachunlachomklao, posthumous name Rama V, was a king of Siam who avoided colonial domination and embarked upon far-reaching reforms.

Chulalongkorn was the ninth son of King Mongkut, but since he was the first to be born to a royal queen, he was recognized as heir to the throne. He was only 15 years old when his father died in October 1868, and he succeeded to the throne under the regency of Somdet Chao Phraya Si Suriyawong (q.v.). Over the next five years he was prepared to assume his duties by observing court business and by travels to British Malaya and the Dutch East Indies in 1871 and to Malaya, Burma (Myanmar), and India in 1871–72.

Following his coronation in November 1873, the young king enacted a series of ambitious reforms, beginning with the abolition of slavery, the improvement of judicial and financial institutions, and the institution of appointed legislative councils. His commitment to reforms patterned on Western models, which he considered vital to Siam’s survival, antagonized conservative factions at court and precipitated a political crisis early in 1875. Rebuffed by the older generation, the king instituted no further reforms for the next decade, but he slowly built up a corps of able, trusted administrators with whom he began from the mid-1880s to overhaul Siam’s antiquated administration. These steps culminated in 1892 with the creation of 12 ministries functionally organized on Western lines, responsible for such functions as provincial administration, defense, foreign affairs, justice, education, and public works. He thereby drastically curbed arbitrary administration, ended the autonomy of outlying provinces, instituted the rule of impersonal law, and laid the foundations of modern Thai citizenship through compulsory primary education and universal military conscription.

Internal reforms were undertaken both because the liberal king believed them to be right and because he recognized that he had to show the colonial powers that Siam was “civilized” in order to avoid the fate of neighbouring countries that fell under colonial rule. Even so, old Siam did not survive intact. The French provoked war with Siam in 1892, and by treaties with France up to 1907 Siam had to give up its rights in Laos and western Cambodia. In 1909 Siam ceded to Great Britain the four Malay states of Kelantan, Trengganu, Kedah, and Perlis, and this brought some moderation of the system of extraterritoriality—which ended only two decades later. In relations with the West, Chulalongkorn even-handedly balanced the colonial powers against one another and consistently sought to have Siam treated as an equal among nations. During tours of Europe in 1897 and 1907, he was received as an equal by Western monarchs. When Chulalongkorn died in 1910, following the longest reign in Thai history, he bequeathed to his son Vajiravudh a modern, independent kingdom.

Dawn of Man[]

Praises be upon you, O' great and beloved king Chulalongkorn. At a time when the world was quickly succumbing to the ambitions of Western empires, you deftly managed to secure for Siam her independence and modernization. Through reforms aimed at elevating her status in this new world, you brought together Siam's dilapidated politics and discordant military forces, inducing a newly modern state and leaving in your wake a country that could carve a destiny of its own into the 20th century.


Leaderscreen by DMS

Noble king, the rising of new powers once more calls for Siam to embrace change. Can you usher in new reforms and induce both harmony and compliance? Can you bring modernity to your people? Can you build a civilization to stand the test of time?

Introduction: "Greetings and welcome upon you, friend. I am Chulalongkorn, king of Siam. I hope you'll find my humble realm a wonder to behold."

Defeat: "I could not keep this kingdom from tearing itself apart."

Unique Attributes[]

Siam (Rama V)

Art by JFD

Monthon Reforms

Adopting new CultureIcon Social Policies expands the borders in connected cities and grants Production Production for the Capital Capital based on those cities' Citizen Population size.


Art by DMS

King's Guard (Rifleman)
  • Receives additional XP when trained in the Capital Capital based on a third of the total XP a unit would normally receive when trained in other cities (up to 30 XP total).

Art by DarthKyofu

Sanitary District (Hospital)
  • +1 Happy Local Happiness.
  • Whenever this city contributes Production Production to the Capital Capital from the adoption of a new CultureIcon Social Policy, the city receives Food Food based on the Capital Capital's Food Food output in exchange.
City List
  1. Phra Nakorn
  2. Samut Songkram
  3. Nakhon Si Thammarat
  4. Nakhon Ratchasima
  5. Chiang Mai
  6. Ubon Ratchathani
  7. Ratchaburi
  8. Chanthaburi
  9. Ayutthaya
  10. Udon Thani
  11. Khon Kaen
  12. Buriram
  13. Chiang Rai
  14. Chonburi
  15. Nakhon Sawan
  16. Songkhla
  17. Phitsanulok
  18. Phetchabun
  19. Pattani
  20. Kamphaeng Phet
  21. Chumphon
  22. Prachinburi
  23. Sukhothai Thani
  24. Nakhon Pathom
  25. Phrae
  26. Phuket
  27. Rayong
  28. Ranong
  29. Nakhon Chai Si
  30. Saraburi
  31. Lopburi
  32. Lampang
  33. Samut Sakhon
  34. Samut Prakarn
  35. Prachuap Khiri Khan
  36. Patchan Khiri Khet
  37. Sriracha
  38. Ratburi
  39. Pattaya
Spy List
  • Singhara
  • Isarawongse
  • Daksinajar
  • Sunanda
  • Mahidol
  • Chudadhuj
  • Urubong
  • Henvadi
  • Vapi
  • Asdang


Peace Theme War Theme

Kaiserreich Kingdom of Siam Full OST March


Kaiserreich - Mueng Kangwon (Worriful Nation)

"Kaiserreich Kingdom of Siam Full OST", from Kaiserreich: Legacy of the Weltkrieg "Kaiserreich - Mueng Kangwon", from Kaiserreich: Legacy of the Weltkrieg

Mod Support[]

Mod Support
Community Balance Patch
Ethnic Units
Map Labels
Unique Cultural Influence
Wish for the World

Full Credits List[]

Steam Workshop Downloader
Steam Workshop
Latest Version: v 1
Last Updated: 5 May 2020


  • JFD: Code, Research, Text, Design, Mod Support, UB Icon
  • DarthKyofu: Art (Civ Icon, UB Icon)
  • DMS: Art (Leaderscene, UU Icon, Unit Flag)
  • Sukritact: Art (Leaderscene, Map)
  • Urdnot_Scott: Art (Map)
  • Poom: Art (Map)
  • bernie14: Unit Models
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