DC has GGX, only PS1 has GG. The original GG is an interesting game. The instant kill can be done at anytime, nothing special required to do it, and if it hits, it wins both rounds. It's a rather crazy game of throw yourself at the other guy and see who f*cks up first. With GGX, they made a more mainstream balanced fighter. The insane "charge in and hope you don't die" pacing of the first game has never been seen since.