Step 1 : Introduction to the question "What is the earliest known coin-operated computer or video game?"
...Stanford University's Tresidder Union is the site where the first known coin-operated computer or video game began collecting players' coins. The game was the Galaxy Game. The original game was just one unit but was later expanded to include several consoles. This meant multiple players could play against each other. The cost of the hardware at the time was close to $20,000. To play the game, a player had to pay 10 cents for one game, or could get three games for 25 cents. Source: WorldHistoryProject.org
