Gerin: I liked Colossal Cave Adventure. The Scott Adams games too, from the 80s I think. There was also one that I think was called Captain Goodnight that I tried and liked, but it kept freezing and crashing.
I absolutely loved interactive fiction, and you can get the Scott Adams games to play on your PC, he made some of them freely available.
Colossal Cave Adventure at least the version I saw played on one of the old Osborne PC's when I was a kid was what got me hooked on those games.
Infocom went a step above and beyond the old Scott Adams' adventures with its full sentence parser able to not only understand what you were trying to do but allow you to do multiple things in one sentence.
JDelekto: Yep, I played pong too, the Intellivision system was one of the things one of our neighbors had that drew a lot of kids like me.
ciomalau: www.youtube.com/watch?v=VsOPVCK745I
I have to apologize I'm part of the era where they like to
Cher tinyE: Anyone ever play Aztec for the old Apples?
I bought a game called "Cosmi: Aztec Challenge" which had the Basic Source code.