D&D (text game) I'm just guessing here, I don't know when that one came out. Earliest video game I could find record of was Star Trek, unless you count Pong as based off of the olympics or something silly like that. If you include Pinball, the list goes back further but I don't have any more time to mine KLOV...
Someone hit up the KLOV. Yes, this is correct. And no, Firefox was released in 1983 during the laserdisc craze (around the same time as another movie-based game Cliff Hanger, which was based off of two Japanese Lupin III anime films). Tron was from 1982. Code coming up and new question thereafter.
Star Trek, I'm not sure, despite the picture ... maybe "Death Race" in 1976 ? (Sorry for firefox, but I found the info in my Movie Encyclo, so ... ?!?) EDIT : you were right for S.T. !!! Congratulations !!!
Yeah, I was kinda surprised that I got it with Star Trek - I guess it depends on what is defined as a "videogame" Thanks for the code! Now I can Space Out at work!