Changes

Diablo was the game that Battle.net was launched to support, and you may still play the game online via Blizzard's service. Diablo also supports modem-to-modem, serial port, and LAN via IPX (NOT TCP/IP and LAN !) play, and those are though these generally better lag provide lower latency than you'll get through the Battle.net servers, they are much more difficult to configure properly. There is no security on Diablo games or characters, and it's recommended that you back up your character files before playing online with anyone you don't know, since character corrupting hacks abound.