23 Spacewar! (inducted in 2018)
In 1962, Massachusetts Institute of Technology student Steve Russell saw his vision come true when he, along with a handful of other students finished programming Spacewar!
The game, which was designed to emulate fast, gritty dogfight battles in outer space - much like the planes and ships in WWII and science fiction films.
The game, programmed on a DEC PDP-1 microcomputer in MIT's lab, proved so popular that it found its way into other labs all across the world.
Nine years later, that very same game was discovered by a young Stanford student named Nolan Bushnell, who saw the commercial prospects of a game that could be played on a computer monitor.
Bushnell, with the help of company Nutting Associates, eventually turned Spacewar! into Computer Space, put it inside a sleek looking cabinet and turned it into the world's first arcade game.
It didn't do very well. It wasn't a complete flop by any means - it even inspired many imitators - it wasn't the success the company had hoped for. It just was too complicated for the bar and student union crowd to keep plugging money into. So, Bushnell replaced it with a much simpler title.
But, we'll get to that a little later.
Next, we go from spaceships to battle axes...