SF 2, but I was all mashing the buttons with no idea what I was doing for about 5 minutes and then went back to Mario.
After that it was Soul Calibur (Arcade, then DC version).
The reason is this:
People don't like to lose. They like even less to lose over and over. When you play "win at all costs", you are effectively trying to break your opponent's spirit. Now, as little as I like losing all the time, I also don't like winning all the time. If my opponent isn't...