These mini-bowling machines are pretty cool. They use real duckpins spaced closer together and a variation of the string-reset machines. The ball is more like a candlepin ball, being around 4 inches in diameter. You get a game of five frames for your money. I think I want one for my basement.
We found this one in the Arcade at the Walt Disney World Yacht & Beach Club Resort. After munching out at Beaches and Cream of course.