Two Worlds was awful though
I agree that sorting by scores might cause you to miss "some" good games, but honestly it's still a valid method IMO because if the goal is to filter down to mostly or all good games..you're still likely never going to play every game on the system, so if you missed a few here or there..it doesn't really matter (for me that is)
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All great posts in here. What I have been doing is looking up some sites I trust and getting Top 100 lists for consoles (or Top 20 or 50 if smaller systems).
I start by moving those games to a folder. Then I watch several "Hidden Gem" lists on YT of YouTubers I trust like AVGN or Metal Jesus, etc. I move those games over.
Then I look up RPG games for that system and move all of those (because I just want all RPG, good or bad)
Lastly - I look over the remaining games and move any that I have any personal attachment to be it that I rented/owned it growing up or Nostalgia, etc.
So far I have done 2600, NES, SNES and cut those libraries down drastically. I think for instance (am not at home right now) my SNES is down to 200-300 instead of 800, same for NES...and I think 2600 ended up with like 50 or so.
Much better for me anyway. Very nice to scroll through LB to see good games and interesting games rather than random crap I have no interest to play.