There are three deaths. The first is when the body ceases to function. The second is when the body is consigned to the grave. The third is that moment, sometime in the future, when your name is spoken for the last time.
Various philosophies have some variation on that theme, some saying not to speak their name lest you recall them from the afterlife, the very notion of "great man theory" from Thomas Carlyle, one of the major ways of viewing history, is pretty much this as well. I have pondered it however for works of art/media before, indeed having many books from the 1700s and beyond it is a real wonder, and thus today we have the equivalent discussion for computer games. Statistically speaking then however many thousands of games are made per year, however many years games have been going on for, the skew towards new and popular... there are going to be some that reach some variation on this sort of theme.
To that end what game that in all probability nobody else in the world would have played, thought about or terribly considered in the last year is among your favourite games? Preferably make it something that achieved a modest level of popularity, or some kind of influence, but you can go obscure if you want. They need not be good games, games that pushed boundaries or anything like that.
If you want to see if someone posted a let's play, a review, an essay piece, a gushing on a forum somewhere then so be it, however this is going to be more of a thought exercise. I will give that in all probability nobody has considered or played some rare translation of an original xbox game (several were made into rare European languages) but at the same time someone might have done the base games. Can be an unknown sequel or an obscure port though. Also no lost games or online only games where nobody remade the servers. Does want to be a game you have played, that continues to inform how you look at games or that you might reference in a list somewhere if someone asks about things there.
As a secondary question there are many around here who have libraries and experience going back to the 70s and 80s. Doubtless there is some favourite from the Commodore 64 or something that nobody has played there. Would you think those have an easier time than today where there are a thousand maybe not asset flips but something not so far removed that get their time in the spotlight and go?
For instance random selection from the bucket of C64 and other tape games
Now none of those are my favourites (other than the random inclusion of Turrican II I might struggle to tell you details of the rest) and none would have been played by me any time recently. However one could be someone's favourite out there somewhere.
At the same time among many failures then firing the random number generator at popular seller of PC games known as Steam got me "Megadimension Neptunia VII Ultimate Weapon Pack" and "Barbarroja", a 1 review (not recently) strategy game wherein you get to play through the 1941-1945 Germany-Russia front of world war 2. Seems though that Red Orchestra: Ostfront 41-45, a 2006 first person shooter also in the list of successful hits, got 11 reviews in the last 30 days to bring it to 1186 total, though it is from the devs of Killing Floor and Maneater so there is that.
Looking at my collection of mostly gamecube, xbox, xbox 360 and PS4 games then while I might like Gun Valkyrie, Lost Kingdoms II or Resonance of Fate to be better known they are unlikely to reach the status required at this point in time (maybe in a few decades). Maybe in the PC section there is "Line of Sight Vietnam", one of the few games to have a truly positive experience in online shooting multiplayer for me (it's Steam page and Good old Games page says otherwise though and was remembered by many more).
Unknown name borderline text adventure educational game from the 386 school computers wherein you had to make a skeleton key from a limited number of blanks and references for working keys to explore a castle will have to be it, it is certainly something that pops into mind every so often. Might also still be the most realistic lock picking in any game I have ever played.