I want to make a multiplayer game in GDevelop(Should be playable from anywhere with Internet). How can I make it, if Gdevelop has an option for that. I love Gdevelop, and it would be very nice if I could make a multiplayer game in this engine 
GDevelop supports internet multiplayer via Peer to Peer.
Networking is an extremely complex subject, even in a simple to use engine like GDevelop.
You won’t find many tutorials because each game will implement and use netcode differently, but you can start here:
http://wiki.compilgames.net/doku.php/gdevelop5/all-features/p2p
and
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You can find a video on the development of a multiplayer game here: Video Tutorials [GDevelop wiki]
When using an extension, you can see it here: https://gdevelop-app.com/game-example/p2p-networking
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