MELROSE PARK, Ill.  Being inside a pinball machine factory sounds exactly as you think it would. Across a 40,000-square-foot warehouse here, a cheery cacophony of flippers flip, bells ding, bumpers bump and balls click in an endless, echoing loop. The quarter never runs out.

But this place, Stern Pinball Inc., is the last of its kind in the world. A range of companies once mass produced pinball machines, especially in the Chicago area, the one-time capital of the business. Now there is only Stern. And even the dinging and flipping here has slowed: Stern, which used to crank out 27,000 pinball machines each year, is down to around 10,000.

To most, the story seems familiar  of a craze that had its moment, of computers that grew sophisticated, of a culture that started staying home for fun, of being replaced by video games. But to pinball people, this is a painful fading, and one that, some insist, might yet be turned around.