I do sometimes feel that too about some games I score lower than a 10 or even 9. It is something special that tingle. Something that makes it special and memorable. One such game I have reviewed at C3 which did not reach a high score was Winged Sakura: Mindy's Ark. I just want to see more of that, but better polished (MUCH better polished). It was straight out painful to play at times, but it was at the same time a special experience that is really memorable.
Other games that gave me that feeling where Analogue: A Hate Story and Hate Plus.. Those games really left an emotional mark on me. And those got higher scores than Winged Sakura as well... Much higher.
In Sakura Wings: Mindy's Arc it is the fact that the game feels fresh with its genremix that keeps it in my mind. Definitely, I do not think it will be a classic though. No way, but it had that tingle and a well-done sequel without the flaw of gameplay designed to slow down a tedious task more than needed might be a game changer in the Tower Defense genre.
Analogue and Hate Plus though. Those games might if discovered become real classics in their genre. I know they are going to be very fondly remembered by me at least. What made me fall so deeply for them was the emotional attachment to the characters, the world and the stories within.
The difference between illusion and reality is vague to the one who suffers from the former and questionable for the one suffering form the later.