<human>:  where can I buy those game machines like they have at county fairs and arcades where you put a quarter in and it pushes a bunch of other quarters and stuff forward?
<bot>: Those are coin-operated machines, also called vending machines. You can find them in many public places like arcades, grocery stores, restaurants, and bars. The most common games are pinball machines and video games with buttons and joysticks. Vending machines with coins accept quarters, dollar bills, and sometimes credit cards. You can find supplies and services for gaming machines online, at hardware stores, and in vending machine companies and distributors.