Pokemon Blue
Ahh my first ever Game Boy game (got it for xmas along with a Color!)
It was perfect. Such an absorbing adventure, just travelling and battling with your pokemon. Creating that bond with static 2D sprites was just amazing.
Doom
The first game to scare me and grip me within its atmosphere. That alone makes my list.
Super Mario Bros 3
Super Mario Bros 1 was one of my first games, SMB 3 was my best game I'd ever played at that time. It was simply the greatest sequel of all time. Everything, the music, the graphics, the suits, the worlds, the map. And the sheer fun factor and all those hidden bells and whistles made it a dream come true. My childhood game in a nutshell. (LONG LIVE THE KURIBO SHOE!)
Super Mario 64
The first true open world game. Each level was like a playground, just unbelievably great design and the PERFECT transition into 3D for a game character ever. The music in the water levels, the Wing cap, the bowser battles, peach's secret slide. So many memories from this.
Final Fantasy IX
My first Final Fantasy that I played and the first one I finished. It didn't do anything revolutionary but everything it did, it did really well. Great characters, great graphics, great music, just a great journey. Was VII better? Perhaps, but this will always be the number one Final Fantasy in my heart.
Goldeneye
The mulitplayer game of my youth. And the single player was fantastic.
Resident Evil 4
The perfect action game. I don't think I've ever played a game so tightly oiled at Resident Evil 4. Looked amazing, the atmosphere was perfect, the weapons had real kick, the story is my fave in Resi lore and the gunplay was so satisfying. Has yet to be bettered in the action genre.
Metal Gear Solid 3
Maybe it was the extremely satisfying gameplay,the little digs Kojima throws in at MGS2, the amazing bosses or the most incredible ending I've ever seen, MGS3 is easily my favourite Metal Gear game. MGS1 was amazing, MGS2 was a extremely novel and satisfying way of making a sequel, but 3 effected me more than either one. THAT ENDING.
The Legend of Zelda Ocarina of Time
Just the most immersive game I've ever played. Hyrule became a living breathing place when I played the game, and its amazing presentation, sublime gameplay design and innovation all added to the experience. That feeling when you walked out to Hyrule field for the first time and realised how open and huge it was and how the game had just begun was amazing. The feeling you got when you got to become Adult Link and realised that the amazing journey you'd had up till then wasn't even half of this amazing game was just indescribable. Everything, the atmosphere, the world, the puzzles, the bosses, the music, was perfect.