"In the 1980s, enterprising videogame players used to try to get through Nintendo's "Super Mario Brothers" without squishing the orb-like enemies encountered along the way—just to see if it could be done."
"Open House London More than 200,000 visitors are expected to tour more than 200 sites across London this year, including Norman Foster's orb-like City Hall on the Thames's South Bank."
"For something more challenging, there is "Osmos," a meditative game where you control a kind of cellular organism whose aim is to grow by absorbing other orb-like objects."