Heh, I've been asking people that and my answer is a bit weird. Its either Street Fighter III: Third Strike or Guilty Gear XX #Reload. Both have a huge imprint as a teen, though I'm a little better at 3S (which is not saying a lot). I love GG but feel bad that I don't play GG or any ASW fighters that much, with Strive being the weird outlier (nothing wrong with them, I just stop having the desire for them for some reasons).