Say I have 3 equal images on the screen. I'd like to press a shortcut and have the mouse looped between the 3 images in any sequence. Right now it throws an error "no unique image found". Is it possible?
Post your macro and a screenshot of the kind of images you're dealing with. 
Never mind, I changed it to Best and it worked now. Thank you.
You can use the For Each action and the Found Images collection to find all the matches on the screen and then iterate through them to do whatever you'd like with each of them.
As also noted, the click happens by default at the unique image (so there is no ambiguity), but it can happen at the best, or the top, or bottom, or whatever image.