Back in 1979, a friend and I started playing a doubles game of (arcade) Asteroids at about 5:30pm on a Saturday evening.
We were still playing the same game when they had to turn the machine off at midnight because the place was closing. Lucky for the owners that there were 3 Asteroids machines side by side or they might have asked us to leave.
We lost count of how many times we 'clocked' the score over - it went back to 0 at 100,000.
We also became quite skilled at keeping games of Missile Command and Joust going for hours as well over the next few years. Never quite got the hang of Defender unfortunately although a few of my friends did.
Those were the days... I still try to relive them on the MAME emulator from time to time. I can keep Missile Command and Joust running for a fair while after a bit of practice.