Sid Meier's Civilization V

Sid Meier's Civilization V

1,385 ratings
Civilization IV Diplomatic Features
File Size
3.847 MB
Apr 26, 2013 @ 1:50pm
Mar 26, 2016 @ 10:21am
27 Change Notes ( view )
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Civilization IV Diplomatic Features

In 1 collection by Putmalk
Putmalk's Mods
2 items
Current Version: 11.0.0009
Savegame Compatible: 11.0.0 and up (Version 10 available in "Alternate Download Links" section)
Last Update: March 26th, 2016

This mod adds new diplomatic features as they appeared in Civilization IV.

  • Sharing Opinions: The AI will share their opinions of other leaders with you if they deem you a trustworthy ally.
  • Map Trading: Sell World Maps upon discovery of Military Science. Cost goes up depending on the quality and quantity of terrain that is to be discovered - don't be surprised to chalk up a lot of cash/luxuries/your map for a map! Maps that are equal (no unique territory between two civs) are worthless.
  • Technology Trading: Upon discovery of Scientific Theory, allows you to sell technology with other civs. The cost will be determined by how many turns left this technology has to be researched (by the purchasing civ). By default, Research Agreements are disabled, but you can re-enable them (and disable this feature) in Advanced Options.
  • Request Help: Replaces "Demand" with Civs whom you've declared a Declaration of Friendship with (no diplomatic penalty, AIs will give help if they're in a better shape than you)
  • Generous Offers: AIs whom you have DoF's with will offer you help if you need it (if you're low on GPT/Gold they will donate some, if you're low on happiness they will donate a luxury)
  • Vassalage: Enslave your defeated foes and create vassals! Vassals are your puppet states. You swear protection to them, and in turn, your Vassals provide you with tribute.


This mod modifies the Civilization V Source Code (the DLL). It is not compatible with other mods that also modify the Civilization V Source Code (the DLL).

This mod modifies the Civilization V Lua. It MAY be compatible with other mods that also modify the Lua. Do to the amount of mods out there, and the number of potential conflicts, I cannot debug issues with this mod when used with other Lua mods. Please consult the github page for a full list of affected files.

It is highly recommended that you play the Community Patch Project version of this mod (does not require Community Balance Patch). The Community Patch Project also includes several bugfixes and general improvements to the game that will enhance your gameplay experience. It is the recommended Civilization IV Diplomatic Features experience.

Compatibility Patches

More compatibility patches may be added if they are necessary and easy to make.

C4DF + Enlightenment Era


I am coordinating with the Community Patch Project now. While this mod has it's standalone version on Steam, the primary (and most supported) version will be Civilization IV Diplomatic Features - Community Patch. The Community Patch Project is located here: If you want to play beta versions of this mod, check out Community Patch!

Alternate Download Link
{LINK REMOVED} (Most Recent)
Popular Discussions View All (25)
Nov 10, 2017 @ 10:06am
Aug 22, 2017 @ 6:16am
Nov 5, 2017 @ 2:12pm
Mod bugged?
< >
Robihunn Feb 22 @ 9:27pm 
Its not working at all. Cant get it to work without bugging out.
The Facepalming Toaster Jan 20 @ 11:38am 
Would this work with Ynaemp?
Techpriest Enginseer Jan 19 @ 11:05am 
The mod isn't abandoned, but rather on a slow big advance when it comes to modding. Also considering that the bugs you people are addressing are fixed with the Community Patch addition.
Smith Jan 5 @ 10:59am 
Liberation in the diplomacy screen straight up doesn't work. AI seems to value it, and will barter for it, but once accepted, liberation does not occur. This also applies to peace negotiations.
t2force21 Dec 27, 2017 @ 5:57pm 
subbed but doesnt show up in my mods list
FiddleRiddle DiddleDiddle Dec 4, 2017 @ 1:03am 
Also, I think there should be a togglable option or two that allow tech to be traded at writing and/or at education instead of just scientific theory.
Erenussocrates Nov 21, 2017 @ 4:17am 
There are logical errors with the AI's calculation. Mod seriously needs some fine tuning. When I only choose vassalization as a peace offer, the enemy doesn't accept it. But they accept the peace offer when I offer to take one of their cities AND make them my vassal. It's as if the request of taking the city overrides the vassalage in their logic.

Is this mod abandoned?
Erenussocrates Nov 17, 2017 @ 1:36pm 
Your mod doesn't work properly. I choose "Liberation" option when negotiating peace, the AI accepts the peace offer, but his vassals are still not liberated. This is so annoying. Fix this bug.
FiddleRiddle DiddleDiddle Nov 11, 2017 @ 6:57pm 
Can you make it so the AI can surrender techs without an embassy? Because to set up an embassy there needs to be peace, but to get techs for surrendering there needs to be war, but for tech trading there needs to be an embassy. Can this be addressed?
The Otaku Nerd Nov 11, 2017 @ 12:26pm 
I can ever get the ai to "capitulate", what can I do to get them to accept?