Imagine playing air hockey with a robot that always wins. This air hockey-playing robot was developed by researchers at Chiba University's Namiki Lab.

Not only is this robot designed to always win, it's been taught how to string along its human opponent so they think they have a chance at winning, when they actually don't.

The robot's four-axis arm is assisted by a pair of high-speed cameras that continuously track the trajectory of the puck, guaranteeing a human opponent will never be fast enough to score. But the worst part about playing against this robot is that it's programmed to study its opponents' playing style and compete in a way that keeps them wanting to play.