The very first metal gear solid. I loved it :)

Crash Bandicoot 3, Resident Evil 3, Medievil1 and 2, Spyro The Dragon, some SNES game with demons in it ( i cant remember the name LOL ), Resident Evil 4, God Of War, Uncharted Drakes Fortune, Pokemon Ruby Edition, Crash Team Racing, Spiderman ( on PS1 )

Final Fantasy X - just because the story is so gripping from the get go and it was in my mind the pinnacle of the Final Fantasy series.

Pokemon Red/Blue - who doesnt remember these games.

Onimusha: Warlords, Onimusha: Samurai's Destiny and Onimusha: Demon Seige all amazing games however the latest on Dawn of Dreams let the series down i think, it just wasnt the same for some reason even though they hadnt really changed that much.

Hogs of War - one of the most ridiculous games for the PS1 but utterly brilliant, never could get past the 2nd to last level though.

Any Blizzard RTS from Warcraft II and onwards.

C&C Red Alert.

Age of Empires 2 and Age of Mythology.

I spent so much time with those RTS games.

The Legend Of Zelda Ocarina of Time. All my friends had it, and we helped each other out. When one figured out how to solve something, he told the others. Good times. I can't imagine playing OoT alone, it was a very social game.

Pokémon Yellow. The game that got me into video games, and made me buy my first system, the Game Boy Color.

Pokémon Stadium. The game that made me get an N64.

Sonic CD PC. My first 2D platformer.

Heroes of Might and Magic 1. Played it when I was a kid. One of the most wonderful fantasy settings ever in a game. Everything was made better with the second installment. 3 dropped somethings that I liked but I still get why people think it's the best. IV and V never happened.

Tekken 3. I will never forget this game. I remember it, because I hate it so damn much. I was a kid and played it on a friend's Playstation. I had never ever held that complex dualshock controller before, and I got my ass kicked because I never figued out how to play it. I thought it sucked and I still think it sucks. I hope the tekken series dies.

Metal Gear Solid 1, 2, 3

Super mario BRos

DOnkey Kong Country

Tomb Raider 1 (have some wonderful memories of this game & the PS1 days of no homework & only games)

Pokemon Gold

Final Fantasy 6, 7, 8, 9, 10 (not 12 unfortunately)......and as 13 beats 90% of them....I'm sure it will be memorable in the future

METAL GEAR SOLID 4 : GUNS OF THE PATRIOTS

of course! MGS4 i spent months on that, the story is engraved in my head aswel as Otacon going "SNAAAAAAAAAAAAAAAKKKKEEEE!!!"

1. The SHADOW OF THE COLOSSUS
2. half Life
3. God of War, 2
4. HALO
5. GTA : 3 and up
6. Uncharted 1, 2
7. Super mario Brothers
8. pac man
9. Doom

10. MGS4

Grim Fandango
Elite
Ultima Underworld 2
Tie Fighter
Doom
Half Life
Deus Ex
System Shock
STALKER
Vampire Masquerade
Dark Corners of the Earth
Silent Hill 2
ICO
SOTC

Crash 3
Final Fantasy X
Uncharted 2

Most memorable from each generation, but there are probably some more, like GTA SA, Jak and SSX 3

GTA vice city and san andreas
lord of the rings :P
super smash bros melee
red alert 2!!
one of the timesplitters cant remember :S
rise of nations (made me stop playing red alert 2 :O)
halo 2
call of duty 4 and up
resistance! (the most game i enjoyed since the launch of ps3)
oh and last but not least counter strike my first FPS :P that or half life but i hated half life haha