This tutorial is based on a past tutorial by @kyatric
construct.net/en/tutorials/local-multiplayer-turn-based-420
This one was based on Construct 2 and it could only be played locally. So I have converted it to Construct 3 and to an actual Multiplayer game.
Please note for the Multiplayer option; you need to open 3 screens, one for the host, and 2 for the peers. The host is not playing the game, just managing it. This is the source of confusion because, in many examples, host not only hosts the game but plays the game as well. I don't like this method; better to set the host as a non-player.
I have tried to comment as much as I can, also, the multiplayer object and player sync works well, but needs more work on the whole game pay, so if anyone wants to have a crack at that, be my guest.
You can download the file from here:
github.com/ilgazdemirel/multiplayerturnbased
Hope this help...
Martin