Simple, just make a rule in an ordinary town
You can also build, but you need few posts to make it done (Any number but 1 and 2 is not allowed)
no double posting!!!
You can also remove rules and exchange them.
Example
Poster 1: *Builds a time machine needs 3 posts to be done*
No ransacking banks
Poster 2: Jingle on the river is not allowed
Poster 3: *Builds a Town Hall needs 6 posts to be done*
Cops can now have dart guns.
>BEGIN<
*Builds a Mall 5 posts to be done*
Littering on a public place is not allowed