If you just want to play Tekken 3 on PC with all characters unlocked :
You skip the satisfaction of beating Arcade mode with every character, which was the intended way to learn the game. Version Mismatch: A North American (NTSC) If you just want to play Tekken 3
Rename your downloaded save file to match the one currently being used by the emulator (usually something like epsxe000.mcr ). If you just want to play Tekken 3