Sort of backwards to what you might expect: they give away the server and sell the client. (Which makes sense, since the client can also be used to play standa

Sort of backwards to what you might expect: they give away the server and sell the client. (Which makes sense, since the client can also be used to play standalone.) The client costs $26.95; you can buy it online with a credit card, or buy prepaid game license cards in some stores. You authenticate with Mojang's central server when you play the game. Actual game servers are usually configured to reject client connections if the user isn't authenticated. (You can turn that option off, but you get a big warning message in the server logs when you do.) The same login for "vanilla" Minecraft also works with modded versions, such as those accessed through the Technic Launcher (http://www.technicpack.net http://www.technicpack.net).