A simple demo of Rocket Networking!
All you have to do is go to the folders, Rocket Networking/Scripts/Options.gml and put your own server id(your private key). Don't have an account with us? Go to rocketnetworking.net and start creating multiplayer games faster!
This was made in under 24 hours. See the full development step by step here. https://www.youtube.com/watch?v=-B_rsXdewfk&list=PLXxCttJDMCiuEEiXMoaP6bS1nlYeqWCWP
Here is a link to the blank template : https://marketplace.gamemaker.io/assets/11424/rocket-networking-engine
End User Licence Agreement (EULA).