To play against AI, do this:
Open a console.
Launch `civserver`
In here, type in `set aifill 5` where 5 is how many players total you wish to have.
Now, launch a client (usually using `civclient`) and connect to localhost.
Now, in the server console, type in `start`.
QUOTE
I'm sorry if this a stupid question but I have absouloutley no idea how to do anything on FreeCiv!
PS: Can you play with no humans?
It's not a stupid question! I ignored FreeCiv for far FAR too long because I didn't know what to do. It's worth learning! It's a great free game.