I recall during the 90s spending a bunch of time on SF2 and Mortal Kombat in arcades: shopping malls, bowling alleys, even some restaurant/bars that had a small arcade. One of the fun experiences was one arcade that Saturday mornings they had a "Freeplay" time for a few hours where everyone paid like $5 and every game was in Freeplay mode. It always amazes me how we all learned the special moves and fatalities word of mouth and eventually they'd get published in gaming magazines. The whole winner stays, loser pays - folks setting their quarter on the arcade to reserve their next spot. Many years later a coworker and I bought a very well used (cigarette smell and burns) MK2 machine for the office break area that took me back. Comically we found at least $10 worth of quarters inside the enclosure. Good times.