> If you played these games a bit, you could get good at it and finish the game on one credit, playing for 30 minutes or even 45 minutes on one coin.

This varies a bit depending on the game, but it’s safe to say that the average play on an average arcade game is much less than 30 minutes per credit. For example, one game of Dance Dance Revolution typically consists of three 90 second songs with the option of earning a fourth bonus song as a reward for skill. Factoring in sixty seconds for menus between songs a player will play between 7-10 minutes a credit. This number is much closer to what the average game targets. You’ll see similar numbers in pinball and racing games.