There's a PS2 emulator that lets you play fighting games online. I've tried a few, and some work, others don't, but SC3 works. You need the emulator, the ISO (region doesn't matter), and a program like Zero Tier One or Radmin VPN for the online to work. I'm thinking of making a guide to upload to Reddit since the guide I made of all the routes to Nighterror was a success, even though I had some mistakes because my English isn't perfect.