I am 31 y.o. and I play since I was maybe 5 or 6 with an atari 2600. I have played so many great series like mario, zelda, resident evil, final fantasy, God of War, Uncharted, COD and so many others that each 1 of em was really great.
Only 1 series was too good to be chosen and that is Metal Gear Solid Saga. The story is Mind blown.