Display Random Images

hi
that is indeed the short code which you mentioned above

[nggallery id="1" images="6"]

just paste this code in the post or the page where you want your gallery to be shown.

This code is not displaying the images in random order upon refresh.

ok then you need to generate another code after adding this changes
form The Admin Panel

Gallery->OPTIONS->Slideshow->Check the Shuffle mode ON

I’m not trying to shuffle the images in the slideshow, but when someone refreshes the page, the images are sorted randomly.

try this short codes, it might help you,

[ random max=2 ]

and

[ recent max=4 ]