If server isn't online Client will steel be able to function, however some of the functions won't be avalialbe, mainly: "Leader board, loggin in, signing up and playing online"
###Note
###Note
By default server is configured to run on localhost, and Client also sends requests on localhost, which will be enough to check all app funcitons without problems, whoever to allow two players to play together on separeted divices some configs must be changed: