I treat a 10/10 game as mind blowingly outstanding it almost every regard in terms of visuals, audio, story, and gameplay.
It does not mean perfect because nothing is perfect. If we fall on the false premise that some people think no game deserves a 10 because a 10 means it's perfect, would invalidate the purpose of a 10 point scale to begin with. At that point it's no longer a 10 point scale because nothing can be a 10. This is completely illogical.
1 to 3 are basically avoid like the plague, in various stages, games with typically have irredeemable gameplay breaking bugs that makes the game heavily inconvenienced or impossible to play normally. Slightly better case being abject performance issues like a game being advertised as having 60FPS but it barely breaks 40. I mean functionally it can be played but why would you want to? Or at the best is just a terrible game, nothing special, poor plot, mediocre gameplay, it's just unpalatable in most regards.
4 to 6 I consider to be below to above average. On the low end the game isn't particularly offensive, it's just mediocre. Something not worth playing more than once. 5 is middle of the road average. The game could be better and it could be worse. 6 is decent. It's not quite good but it's notable for having a particular aspect be it audio, gameplay, or visuals that make it slightly standout.
7 to 10 are good to outstanding. Ranging from a genuinely good game, to great, amazing, and 10 being mind blowingly outstanding. The problem with 8 and 9 is they are so close most of the time. it's just the difference in this case an 8 has a something that one particular aspect of the game that doesn't gel with the rest. I mean it's a great game with fun gameplay and good visuals, but it may have lacking audio, so it's not amazing. 9 is typically hits almost every single note making for an amazing game, but it's not a mind blowing experience.
