Can I make user-specific stuff?

[Lonck]

Units or buildings for example. In single player mode to make it so only the player can build a certain unit that is inaccesible to the AI. Or anything else.

[Angryminer]

No, in about all terms you and the AI are using the same rules.

The only thing that's different is that the Ai can bribe knights to become spies at their court, which the player can't do. But otherwise you and the AI are subject to the same rules and restrictions.

Vain

[Taros]

You can make units be specific to a kingdom (I.E. Janissaries for Ottomans) by editing what kindom has what in Trainunitsl.xls and trainunits.txt.

the best way to go about this is to crate a unique unit (guides for doing is are found on this forum) and then adding it to the kingdom you intend to play.

Building though i think are a no no.