Another one: God of War reboot and its sequel. The empty open world, shallow loot mechanics, and worthless equipment system already felt archaic on release. The combat is yawn-inducing compared to the DMC-lite style of the original.

The Last of Us, probably. Naughty Dog makes games that wish they were movies.

The assassins creed games I would assume, their gameplay is stale.
Other RPGs with similar vibes. Hogwarts, that kinda stuff.

Call of duties, I hope.

RDR2 I think will be a worse experience in retrospect. The long intro, the restrictive missions... It's going to be the kind of game you remember fondly, but can't replay.

The horror games that do the Amnesia gimmick, like SOMA.

BG3. I have literally nothing to base this on, I like the game, it's great fun, but I just get the vibe that it will go the way of RDR2. All vibes no analysis here.

Does Destiny 2 still count if it keeps releasing expansions?

i don't much care for the GTA series

real answer i think the "rotting" of previously well-regarded games is actually driven by degrading pleasure capacity in the median gamer. if we try to imagine what kinds of experiences the gamer of the future will soon be unable to derive any joy from, i expect that any story driven game in which a woman has a speaking role outside of dating mechanics will be dustbinned as unrealistic and grating.