Here is a small tutorial how to create a server:
You start a dedicated server by using the commandline: (game) server Somemap
example: udk server DM-Gaenge
This command will start the map DM-Gaenge and then you are ready to play.
To join other server you have to do this: open/connect(you can choose one) IP-Address
I hope you are not disapointed, but we could create an server list together and everybody could play with eachother! And you do not have to play alone. There are bots and I will make a splitscreen function!
Thank you
SteveBoBs