How would I make something global. Not like _G but like a message across all servers..?
There are two different ways I know of to send data across servers. The first is DataStore, and the second is Http Requests. I don't have any scripts that I can provide, but I can lead you in the right direction!
Here is a game that has a great working version of a cross-server chat script. It's uncopylocked so take a look at it!