I don't remeber name of a game... You are bird, jumping on boxes and, of course, avoid enemy. That was PC XT era
The first pc game you (you, yourself) played was Tennis for Two back in 1952? Now that's some impressive history, but I wonder what brings you to this humble forum of ours, since given your listed age you're 18 and can therefore travel in time. I'm impressed, but I'd figure a time traveler has better things to do. The first pc game I played was probably Lego Loco, though it stopped working on that computer soon after and the game got lost in the several moves soon after.
It was a modified version, in a Pentium 1. Ofcourse, that version of the game wasn't that old, but it was a pixel game and it was copyright of first game maded.