This page includes the descriptions from every Userpatch release posted in the UP releases thread on the AI Scripters forum: http://forums.aiscripters.com/viewtopic.php?f=3&t=2318, listed in reverse chronological order. This thread on the AI Scripters forum also has links to download any of the UP versions except for 1.1. These UP updates were released between 2011 and 2019.