I'm curious what you guys have to say about this. Are there any games you consider perfect? Can a game even be perfect?
My example of a perfect game is always Portal 1. Portal 2 has more going on, but in 1 there just isn't anything to shave off. From start to end, there is nothing I'd change about the game. It's short, infinitely replayable, great pacing. I like Portal 2 a lot in concept, in concept it should be a perfect sequel, but it just doesn't keep the extreme tightness of the original game.
This is kind of a niche thing to praise, but I haven't played any game before or since that "gets" riding a horse quite as well as Shadow of the Colossus does. The way that your horse has a mind of its own but mostly listens to you is tuned so perfectly that if you go from SotC to any other horse game (say RDR2) you'll feel like you're driving a go kart in comparison.
And the fucked up thing is that RDR2 is still better than the vast majority of games in that regard