A research team at Nagoya University in Japan has developed what they claim to be the "world's smallest shooting game," utilizing nanoparticles measuring 1 billionth of a meter. The game combines digital and physical elements, where players use a digital controller to interact with nanoscale polystyrene balls, which act as enemies. An electron beam projects a spaceship on a display and generates electric fields to influence the nanoparticles' movement. The technology showcases potential applications beyond gaming, including advancements in 3D printing and targeted medical interventions. A video demonstrates the technology, showing the beam directing focus toward the nanoparticles.