Your first video game...

[Semix]

Ninja Gaiden 2 for the NES... Took me a YEAR to complete... Totally dug it...

The longest time i took to complete (when i completed it) probably GTA IV, half a year or so. But i wasnt on it much. Quekest- maybe CODWAW- done it first day, then RE5 and COD4 about 5 days.

[Zucca]

Hm. I remember having Elite also with Tetris. Altough it never worked. I had too old PC.
Oh. Those were the times. Not quite good times for video games, until the advent of third generation of console gaming.