When I was in high school, we had a Vax/VMS mainframe (about as big as 2 chest freezers) in the computer lab (1983.) It was there that I knew my destiny did NOT lie with computer programming.
Me too. (Having a VAX/VMS computer in HS.) I wrote Nintendo-style action games for it! Had a 3D maze game, (no monsters, that was version 2.0), it was like Double Dungeons for TG-16, wrote a Pac-Man and a Tetris clone, someone else in the lab did a Tron light-cycles clone (multi-terminal/player), Asteroids, Dig-Dug, I did a 1942 clone for a History class project. Was working on a really extensive multi-player "hex-grid war game", that spiraled out of control in terms of features, never got that completed. Wrote a game in the same vein as Parsec for TI 99/4a and Defender in the arcade. I don't think anyone ever finished it legitimately, it was cranked way too hard in difficulty.
Edit: And yeah, some of the other students got "Empire" on there, too. That was very popular.