A lot of my first games were educational/random CD-ROM games for PC. I remember titles like Math Blaster, Reading Blaster, Frogger, Centipede, etc. I had almost all of the Humongous Entertainment point and click adventures. Putt-Putt, Freddi Fish, Pajama Sam, Spy Fox, Buzzy. Pajama Sam: No Need to Hide When It's Dark Outside is still one of my all time favorite games, lmao.
As for console games, or "real games" if you want to call it that, I guess it was Tetris for the og GameBoy.