I think it's a worthwhile feature so you at least have the option, but Exomarc is right, it actually has limited use in multiplayer games: the server will track your score, not the client, so if you hexedit your score and send s "I have loads of score" packet to the server the server says "Umm, no you don't?" and boots you from the game. This is also to prevent the possibility of somebody entirely recoding your game to the network spec themselves, and programming deliberate hacks in!