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Multiness GP is a NES/Famicom emulator that lets you play classic games on your Android mobile devices. Besides offline mode, you can also play with your friends via LAN network or Online (requires logging in using Google Play account, no third-party apps needed).
This is Google Play only version of original Multiness app, without Facebook login option.
FEATURES:
- Offline Single-player mode.
- LAN & Wifi Direct & Online Multiplayer mode. It is consistent, has no de-syncing problems like other emulators that use scheduled syncing Network play method. However, the gameplay quality will depend on your network connection's speed. 
- Invite others to play Online using Google account.
- Text & Voice chat when playing Multiplayer. 
- Supports saving & loading game' states, even when playing multiplayer (on host side only).
- Supports cheats, even in multiplayer mode.
- Supports both hardware controllers and virtual/on-screen/touch based controller.
- Turbo buttons option.
- Full screen display mode.
- This emulator is powered by Nestopia core, the most accurate NES emulator core ever exists.
HAVE FUN!!!
NOTES:
- Location permission is required for Wifi Direct multiplayer mode. Without it, 2nd player cannot find the 1st player who created the network game session.
- Voice Record permission is required for voice chat during multiplayer. You can disable voice chat in game if you don't want it.
- The app doesn't come with any games. You have to copy or download NES roms to your device's sdcard. Their locations will be detected automatically by the app itself. Both .zip and .nes files are accepted.
- When playing multiplayer, second player is not required to have the game roms in his/her devices, it is only required for the first player (i.e. the host).
- To reduce lag during multiplayer, place your devices as close as possible to each other and to the Router/Access Point.
- Alternatively, using Wifi Direct option if your device supports it.
- Playing over Internet consumes quite a lot of bandwidth which is roughly 60-100 KB per second.
- Google logged in players can join a random open game. As long as the first player (host) chooses to auto pick a 2nd player during inviting process.
- The one hosting the game through Internet is required to have the minimum upload speed around 60 KB/s (512 Kbps).
- If you encounter severe lags, sometimes a simple router or both players' device's wifi restart might help.
- There are some routers that don't support direct Internet multiplayer hosting due to their Firewall settings. If it is the case, the app will attempt to use relay server to relay data between 2 players, though the bandwidth will be limited if relay server is used by too many people. If relay server still fails, you will probably see "Remote connection timeout or disconnected" message popped up on guest player side. You can try to switch roles, i.e. guest becomes host and vice versa. If we are lucky, the new host's router will allow the connection between two players.  
- This application is in no way endorsed by or affiliated with the Nintendo Corporation.
THE APP IS CURRENTLY STILL IN PREVIEW STATE, THUS WE WOULD BE GRATEFUL IF YOU COULD HELP US REPORTING BUGS TO lehoangq@gmail.com. THANK YOU.
SPECIAL THANKS
- Thank Chris Covell, Joey Parsell & Michel Iwaniec for some graphics assets from their game Solar Wars 2001.
- Thanks Ozzed for free 8 bit music. https://ozzed.net
Multiness is GPLv3-licensed and you can download its source code here: https://github.com/kakashidinho/Multiness_public

un emulador de NES que admite reproductores múltiples a través de Internet (en línea) o red local

Multiness GP (beta multiplayer NES emulator)

Última versión de Multiness GP (beta multiplayer NES emulator)