Wow, you're in big trouble. Pinballs machines tend to multiply and your wife is receptive.
Last night, my wife was completely unaware that I picked up a Baby Pac (it's better that way, trust me) but I'm unable to get it into the basement discretely so it stayed in the garage, out of the rain. BUT, in the morning, I quickly dolly-ed it around my house and hid it just behind my fence door until she left for work then dragged it downstairs while she was gone. Mission accomplished!
She doesn't share my enthusiasm for the hobby. She avoids them. *sigh*. But it keeps me in check. You might be in BIG trouble ... or heaven.