Extension:Random In Category

RandomInCategory appears to be an undocumented extension.

Its source code can be found in the svn in the RandomInCategory directory.

File list
SpecialRandomincategory.alias.php SpecialRandomincategory.i18n.php SpecialRandomincategory.body.php  SpecialRandomincategory.php

Info
According to the php file it is a "special page to direct the user to a random page in specified category" created by VasilievVV vasilvv @ gmail.com, based on SpecialRandompage.php code, and licensed under GNU General Public Licence 2.0 or later.

Its name in the software is 'Random in category', and the last changed date in the svn is 2008-09-05 16:09:21 +0200 (Fri, 05 Sep 2008), while the last changed svn revision is r40488.