Digital media can only display a finite number of images, limited by the resolution of the screen. This app will display them all, at resolutions set by the user. If youre not doing anything else for geologic time, you might enjoy this.
You can set the number of colors (or grays) from 2 to 256 and the resolution from 8x8 to 64x64.
There are 3 algorithms for displaying the pictures: Center (growing out from the middle of the screen), Permute (changes happen at randomly chosen pixels), or Shuffle (the entire screen is shuffled after each picture is displayed).
By default the app starts from a black screen, but you can also choose white or a screen in which each pixel has a random color.
And because displaying all the possible pictures takes a very long time, you can get a headstart by having the app pretend its been running since the birth of the universe.