Players interested in playing only on Nuk3town can do so with the Nuk3town playlist under the bonus category. In order for Nuk3town to show up, you must have the Nuk3town bonus map downloaded and installed. Once the map is installed, check under Bonus category.
The description for the playlist says that the playlist is only available for Launch Weekend.
*NOTE: Nuk3town bonus map only available on PlayStation 4, Xbox One, and PC.