A growing collection of video games that have yet to be opened and played, likely due to the fact that so many good games come out and the owner simply cannot keep up.

This is most commonly an issue for professionals in the video gaming industry.

Briefly, "the realization that each random passerby is living a life as vivid and complex as your own." Originally from the Dictionary of Obscure Sorrows, which has a lot more beautiful neologism definitions like this you might enjoy.