this is an old topic, but still

Like Metallicube said, Tales of Vesperia.

Probably the most under-rated game of the entire generation for me.

That's not underrated. It's beloved by most fans and people who have played it. Almost everyone would tell you that the game is good.

And i would say, Project Sylpheed. I really like that game. It has great graphics, sound and story. And with the easy settings, can be easly completed.

Crackdown 1 & 2 I think, 2 was an improvement on 1 and I liked very much.

In terms of multiplats, I must stay that Enslaved: Odyssey to the West was pretty good underrated multiplat.

Tales of Vesperia followed closely by Ace Combat 6.

Fusion Frenzy 2, and Blue Dragon

I'm gonna look thru gamerankings.com and see all titles listed below 80%,

Lost Odyssey definitely at the top of the list as it's below 80%. I have not played Xenoblade Chronicles but I know prior to that game this was the best JRPG this gen (behind Persona 4/Persona 5 but those were on PS2).

50 Cent Blood on the Sand - I don't think it deserves a 80% rating, but in the sense it deserves more recognition then most budget games. The game is actually quite good surprisingly.

EDF - Everyone should own this game. How the hell does it only have a 70% rating?

Deadly Premonition - After recent high reviews It's managed near a 70% average, and this is obviously the most criminally underated game of all time - if you can love it. Definitely a love it or hate it type game, but underneath those shitty graphics and clunky controls lies a insanely good game.

Every other game that I really enjoyed has at least a 80% rating.

Too Human- I enjoyed this game a lot. Didn't sell very well and reviews weren't that good, but still a great game that is very underrated imo. I really hope Silicon knights makes a sequel.

Crackdown 2- Extremely fun game. Getting with a group of 4 in co-op is a blast. The multiplayer is solid and I love using the Toy box DLC (free version). They really do need to make a sequel.

I need to play Deadly Premonition.

Oh yeah...

And Final Fantasy XIII *runs away*.

I agree with this !!!

+ too Human. If you forgot the f...ing death sequence.