I have maybe a handful of games I would rate as 10 out of 10.
- Final Fantasy IX
- The Legend of Dragoon
- Freespace 2
- Dark Souls
Then there are a number of games I'm not entirely sure about. Ones that are on the threshold between 10 and 9.5.
-Shadow of the Colossus
-Valkyria Chronicles
-The Legend of Heroes: Trails in the Sky (and Second Chapter as well)
-Bloodborne
and many more.