Rube Goldberg devices are also known as chain reaction machines, mousetrap machines, or complex contraptions. These machines are known for their improbable nature and the intricate sequence of events they use to achieve a simple task. Another synonym for these devices is the Heath Robinson machine, which is commonly used in the UK. In Europe, they are also called crazy machines, while in Japan, they are referred to as Pitagora Suichi machines. No matter what they are called, these machines never cease to amaze and entertain those who witness their complicated and convoluted workings.