UnFree Spin.

"Manufacturers design games primarily for women over 55 with lots of time and disposable income, and casinos near retirement communities...operate small fleets of jitneys that shuttle back and forth to assisted-living centers. As a come-on, one casino advertises free oxygen-tank refills for its players, and heart defibrillators are increasingly becoming standard equipment inside casinos...As one old Las Vegas hand put it, the country's casinos are now providing 'day care for the elderly.'" The NY Times Magazine delves into the fantastic rise of slot machines as the casinos' prime cash cow.