If you require a purely offline solution, you'll need a local signaling server to use with the multiplayer plugin. https://www.scirra.com/store/game-makin ... server-161
If your LAN will have access to the internet, you can use the free official signaling server as you would normally for an online game.
So that's is it's use. Very great info.
A have more questions please.
1)What if I buy the signalling server and use it both online and offline, do I still need to use Scirra's online signalling server?
2)Does Photon Cloud need an external signalling server or does it already do the work for you?
3) How do I actually use the signalling server?
4) Would I need a signalling server for Photon Cloud?
5) What's the difference between the Photon Cloud plugin and Multiplayer Plugin?
6) What exactly is a signalling server, is it a program or an actual server?
Thanks <img src="{SMILIES_PATH}/icon_e_biggrin.gif" alt=":D" title="Very Happy"> . It would be very helpful if you can answer my questions.