Computer Space, released in 1971, was the world's first coin-operated arcade game. The case design is a great example of what folks in those days imagined the future would look like, which led to its cameo as a 21st-century entertainment device in the 1973 film Soylent Green.
More info on this weirdly fascinating machine, its often-surprising history, and its surviving examples can be found on the comprehensive fan site ComputerSpaceFan.com.