'Powerful'

Bushnell, who will turn 70 next month, has recently embarked on a quest to help seniors via video games. He's an adviser at Anti-Aging Games, which aims to help older people sharpen memory and focus through digital exercises.

"Our quality of life as we get older deteriorates much, much, much more than it needs to, and there are so many things we can do to increase our quality of life," Bushnell said. Touchscreen gaming is "a massively powerful trend, and we're seeing really, really good results from seniors using our games."