Siemens (SI) is pinning high hopes on Pete. A cheery fellow, Pete wears a yellow hard hat with his name emblazoned across the front. He’s polite and eager to lend a hand. He’s also animated: Pete the Plant Manager stars in a new online video game from Siemens called Plantville that simulates what it’s like to run a manufacturing facility. The aim is to take three dilapidated factories and make them more efficiently meet customer orders by hiring employees, redesigning layout, and buying and installing new....