Super Fighter 3 on the NES(yeah apparently it was a pirated port of Street Fighter 2), well didn't even know what a pirated version means until I was in senior highschool .

probably Killer Instinct

Definitely "The Way of the Exploding Fist."

For me, it was on the Commodore 64.

I loved the music in the game as well as the scenic backgrounds. I spent many hours playing that game, and then I played Yie Ar Kung Fu after.  But Way of the Exploding Fist was so much a better game. 

Kortal Mombat

I think I remember playing the first Killer Instinct when I was really young. I had no idea what I was doing.

It was either Mike Tyson's Punchout (if that even counts) or the original Street Fighter in the arcades. Not sure which one I played first though.

SF2 on snes.

smash bros melee

Virtua Fighter on my Saturn. Still own the original Saturn and copy of VF.

I forget what it's called but it was a really fun wrestling game for the nes

EDIT

SO FUN. Brings back childhood memories of me and my oldest brother.