Randomizer for Unreal Gold, and a possible template for future Unreal Engine randomizers.
Download URando.u and URando.int and place them in your game's System folder, which is probably something like C:\Program Files (x86)\GOG Galaxy\Games\Unreal Gold\System.
Make sure to get Unreal patch 227i https://www.oldunreal.com/downloads/unreal/oldunreal-patches/