Original: At the time of its release, Internet-based gaming was just beginning. Duke Nukem 3D did not support the TCP\/IP client\/server model, instead basing its network play on the IPX LAN, modem or serial cable.
Simplified: In 1996, at the time of the game's release, Internet-based gaming was just beginning and Duke Nukem 3D could be played on IPX LAN or modem.