Oh great. Is this thread going to degenerate into a pointless debate?
Here's what the next post likely would say:
Guy #1: "Pinballs used leaf-switches long before microswitches were ever invented!"
Guy #2: "Yeah but I am only talking about VIDEO games"
Guy #1: "Yeah ok I'd agree with you there"
Guy #3: "No you're wrong, here's proof <link to a page on KLOV>"
Guy #2: "Yeah but this game came out before that: <link to another page on KLOV>"
Guy #4: "That game uses a trackball, it doesn't even have buttons"
Guy #2: "Oops. My bad"
....etc...
Hopefully I've pre-empted about 5 or 6 pointless messages from being posted.