In order to use NetPlay, follow these steps:

1. Both players should be running the same game.
2. The first player should select "Connect NetPlay" from the menu and then choose "Become Server" option.
3. The second player should select "Connect NetPlay" and choose first player´s name from the list of available servers.
4. Both emulators will now reset and start playing as if they were the same NES box with two gamepads.
5. Once you are done playing, select "Disconnect NetPlay" on both devices.

IMPORTANT: Both your devices have to be on the same local network or visible over Internet. You cannot use NetPlay from behind NAT right now.