The history of online games dates back to the early days of packet-based computer networking in the 1970s, An early example of online games are MUDs, including the first, "MUD1", which was created in 1978 and originally confined to an internal network before becoming connected to ARPANet in 1980. Commercial games followed in the next decade, with "Islands of Kesmai", the first commercial online role-playing game, debuting in 1984, as well as more graphical games, such as the MSX LINKS action games in 1986, the flight simulator "Air Warrior" in 1987, and the Famicom Modem's online Go game in 1987.