The Total War development team have put up a new YouTube video about the multiplayer campaign. Multiplayer campaigns were something players called for many games ago and it did come to fruition, and it seems the developers have really given it some thought in Three Kingdoms.
You can choose various diplomatic options if you wish to help each other against the AI factions to of course trade, become allies and the new diplomacy options the game has created. You can choose to share your mandate which solidifies your alliance even share your settlement numbers to pool in resources. Inter-faction marriage also presents new opportunities by the player gaining the hero via marriage has access to unique units only available to that heroes previous faction.
If you'd like to be a little Machiavellian you could also create spies and encourage your fellow player to hire them into their faction retinue. Like in the normal campaign game, once hired that unit that was deployed as a spy could provide you valuable information about your allies faction. It could prove to be a huge level of mistrust or it could prove that your so called ally is preparing their finances and army to run against you in the near future.
The new diplomacy features and plethora of options available to you in the game really do add a lot to the multiplayer scene, check out the spotlight video below as Wheels and Tom take you through the features of what's new multiplayer for Total War: Three Kingdoms.