1-Marc Ecko's Getting Up: Contents Under Pressure,
Reason:it is revolutionary,and takes you to the birth place of NYC graffiti.

2-Metal Gear Solid 3: Snake Eater
Reason:the first time big boss is introduced.

3-Devil May Cry 3: Dante's Awakening
Reason:2 great characters of all time born.

4-God of War,God of War2.
Reason:there is some special elements involved that forces you to say it is epic.

5-Gran Turismo 4
Reason:the amounts of cars and details of the exterior is just amazing.

6-Grand Theft Auto: San Andreas
Reason:first time ever in games history we see such a big world open space game.

7-Hitman: Blood Money
Reason:the last of hitman.

8-Killzone
Reason:the amazing first person game that was ment to go to ps3 for the sake of FPS and SONY.

9-Manhunt 2
Reason:at the time of release no company dared to rate the game,it some point it wanted to be rated as adult,and a controvercy went on.

10-Obscure: The Aftermath
Reason:mental bothering.

11-Prince of Persia: The Sands of Time
Reason:prince of persia makes it as official game for its generation and generations to come,a great comeback

12-Resident Evil Code: Veronica X
Reason:the last of the original movement on the resident evil game.you know the old movement that resident evil offered.

13-Rise to Honor
Reason:first ever kongfu game,starring jet lee.

14-Silent Hill 4: The Room
Reason:another dimention into the silent hill.

15-Manhunt
Reason:the suprised feeling of WTF is going on,plus you cannot justify why you would make this game.

thank you for reading this and sorry if there is spelling mistakes,cya guys