How to create a thing like this–>
mostly Blueprints unlikely real.
If you mean for game logic: You would use an engine that supports Blueprints (unreal) or a node system.
GDevelop doesn’t support either.
If you mean building out something people can use in your game. You’d need to basically create your own visuals and connectors, and then map out every single event you want to use as a node in the event sheet.
Like a game node thing, can you help me to make that the connect thing.