History of Nintendo
In 1972, the first commercially available video game console, the Magnavox Odyssey, had a light gun accessory, the Shooting Gallery. This was the first involvement of Nintendo in video games. According to Martin Picard in the "International Journal of Computer Game Research": "in 1971, Nintendo had -- even before the marketing of the first home console in the United States -- an alliance with the American pioneer Magnavox to develop and produce optoelectronic guns for the Odyssey (released in 1972), since it was similar to what Nintendo was able to offer in the Japanese toy market in 1970s".
History of online games
The first video and computer games, such as NIMROD (1951), OXO (1952), and Spacewar! (1962), were for one or two players sitting at a single computer which was being used only to play the game. Later in the 1960s, computers began to support time-sharing, which allowed multiple users to share use of a computer simultaneously. Systems of computer terminals were created allowing users to operate the computer from a different room than where the computer was housed. Soon after, Modem links further expanded this range so that users did not have to be in the same building as the computer; terminals could connect to their host computers via dial-up or leased telephone lines. With the increased remote access, "host based" games were created, in which users on remote systems connected to a central computer to play single-player, and soon after, multiplayer games.