My son played just fine at 3. They all start out hitting both flippers over and over when they are new to it, but I've seen some adults do the same thing too when new to pinball. With a little patience and coaching on waiting until the ball gets to or close to the flippers before using them, they can get that down. They'll still use both flippers most likely. Here's my 3 years old at TPF 2013 and he even started getting a stance like daddy has sometimes. He was loving Viper Night Driving that year. My 2 year old is more interested in just seeing the ball and doesn't have hitting the flippers down yet. No problem with any kid playing any of my machines.