You launch balls upward from the bottom of the feild.. much like launching a pinball from the plunger. The old ones, are spring based, like plungers, so you can vary the power used. The new ones you just vary the power used with a knob that controls the auto ball launcher.
WHen the ball reaches the top, it falls thru a bunch of Nails. The goal, is to get the balls into the target holes. These sometimes open up with a wider opening, sort like a flower that blooms (two side fins raise and lower).
The skill, is trying to vary the power so that you get close to the areas where the targets are. Of course, theres much luck involved, because you cant control the feild. The pins alter the path of the balls as they pass thru and bounce off them.
The gamble aspect...
In the parlors, you Buy a set of Pachinko Balls. You are gambling these - much like chips at a casino. You insert the balls into the machines input area. If you score well, you will Win more balls than you put in.
Since gambling is illegal in many of these countries... they get arround this law, by a special setup, in which they either offer a set of prizes, or a special prize in which is worthless... however, you then take that worthless prize to a nearby underground shop... and they give you cash for that prize.
As a game, its not really all that deep, and so youd probably get board of it very quickly. At least, thats been said by some pinball collectors who have bought them.
I would imagine that the old fashion spring versions may be a little more fun than the automatic launchers. But who knows.
The prices they go for can be arround 150 to 300+. At 300$, its a quarter worth twords an "OK" pinball machine, which would be much more worth saving for Imop.
The old fashion ones are purely mechanical I believe. They only have one jackpot light that lights if you hit it. I think there are kits that you can buy to rewire them for your power output.
The new ones usually are sold by people who have already converted them over to use the usa type of power input... though, its always a good idea to make sure just in case.
The Themes of the new ones seem to be very Adult in nature : ) heh
There are a few pachinko simulators arround. Some in visual pinball.. and a few games in mame. Try these first to get an idea what they play like before deciding to purchase.