Extension:ExcludeRandom

The ExcludeRandom extension allows pages to be excluded from Special:Random. For example, this could be useful for hiding in-complete translation pages that have been yet to be moved to their own sub-domain.

Configuration parameters

 * $wgExcludeRandomPages
 * The list of pages to be excluded, in an array. * wildcard is supported (matches any amount of any characters).

Example
This will disallow Main Page and /fr pages from being selected by Special:Random.