pcsx2 fork with netplay
C++ C Assembly HLSL CMake Objective-C Other
Switch branches/tags
Nothing to show
Clone or download
Latest commit 7de7d73 Aug 17, 2017


PCSX2 Online

PCSX2 Online is a fork of open-source PlayStation 2 emulator PCSX2 with peer-to-peer netplay mode.

You can find the latest version here http://www.mediafire.com/?r3c1ejv5m85ekrv


At the time, this project was conceived as a proof-of-concept and a fun challenge. I don't have as much free time now, nor do I have any incentive to go on with this project.

I wanted to play Melty Blood online, so I hacked PCSX2 just for that. Since then we've got an official PC port with much better netplay (even though I haven't been playing Melty much lately), so I can't find any reason to force myself to go on with this project.

If anyone wants to continue with this project I'm more than happy to share my knowledge.

How to start netplay

System -> Boot Netplay. The connection dialog is pretty self-explanatory.

What you should know before playing

  • To avoid desyncs do not change any settings except for the controller plugin configuration. It's not like it will definitely desync if you change anything, but the possibility escalates.

  • During netplay, emulation settings are temporarily reset to defaults with all speedhacks disabled, so performance may drop a bit. And by 'emulation settings' I mean Config->Emulation Settings dialog, so plugin settings remain intact.


  • Peer-to-peer network connection, no centralized servers needed
  • Automatic input delay detection

(Official) Working games list

  • Melty Blood Actress Again
  • Tekken 5
  • Capcom vs SNK 2
  • Guilty Gear XX Accent Core
  • Hokuto no Ken
  • King of Fighters 2002 Unlimited Match
  • Naruto: Ultimate Ninja 3

Working with frequent desyncs

  • Fate/Unlimited Codes
  • King of Fighters XI


This build doesn't force Skip Mpeg hack to be enabled, as it's incompatible with some games.

1. Some cases of emulator hanging during netplay are fixed;
2. Compatibility is improved (for example, Tekken 5 now works);
3. Crashes during netplay should be less frequent now.

Desyncs should now occur much less frequently than in previous version.

1. Booting from physical disc/mounted ISO works;
2. Connectivity problems fixed.
3. Netplay or replay playback can be started only after clean emulator start (as it always desyncs otherwise).

1. Improved GUI;
2. Replays (Press F4 to toggle fast-forward when watching);
3. Input delay fine-tuning (Available to hosting side);
4. Option to make memory card read-only (Available to hosting side, client's MCD is always read-only);
5. Bugfixes.

1. Client side downloads memory card from hosting side to stay in sync. When the session ends, saved state persist only on hosting side;
2. Frameskipping after slowdown due to packet loss should be fixed now;
3. Some stability issues addressed.


  • Desync detection/correction;
  • Support more games.