Dual is an application I built which pulls two images from a database and pairs them at random on the page.
In addition, each image gets passed through pseudo-randomised css filters.
Currently there are over 100 images in the archive (and I intend to add more),
so the number of combinations is unfathomable.
Click refresh in the top right to see more random pairings (or refresh the page). Click on any image to change the stacking order.
It does work on mobile but it's punchier on desktop.