There are numerous debates over who created the first video game, with the answer depending largely on how video games are defined. The evolution of video games represents a tangled web of several different industries, including scientific, computer, arcade, and consumer electronics.
Early games used interactive electronic devices with various display formats. The earliest example is from 1947—a "Cathode Ray Tube Amusement Device" was filed for a patent on January 25, 1947 by Thomas T. Goldsmith Jr. and Estle Ray Mann, and issued on December 14, 1948 as U.S. Patent.
Inspired by radar displays, it consisted of an analog device that allowed a user to control a vector-drawn dot on the screen to simulate a missile being fired at targets, which were drawings fixed to the screen.
Other early examples include:
1.The NIMROD computer at the 1951 Festival of Britain.
2.OXO by Alexander S. Douglas for the EDSAC in 1952.
3.Tennis for Two, an interactive game written by William Higinbotham in 1958.
4.Spacewar!, written by MIT students Martin Graetz, Steve Russell, and Wayne Wiitanen's on a DEC PDP-1 computer in 1961.