Step 2: Download and install GGPO-v.0.32Step 3:
No need opening ports in version 032 or newer open ports for you
Open UDP ports 6000-6009 (inbound/outbound) and TCP port 7000 (outbound) in your home network.
GGPO uses these ports to communicate with the matchmaking server and with other players
on the internet.
If you need help configuring your router, you may find this
guide on Port Foward helpful.
Installing the Game ROMs
In order to play any of the supported
games on GGPO, you will need to legally obtain the ROMs for the game you wish to
play and put them in the "ROMs" folder in your install directory. You may need
to run ggpofba.exe to create the ROMs folder if it's not there after you've
If you're having trouble, try asking on the Twitter.
If you would rather compile the ggpofba.exe source yourself, you can
download the pacakge here.