Kathleen “Kit” Connell turned the grand old age of one hundred last week, and the spritely grandmother of one cites the Nintendo DS as the main reason she remains mentally nimble.

“It’s absolutely super, I can’t speak highly enough of it. I don’t know what I would do without it,” said Kit in an interview with the Telegraph newspaper. “I’ll play it in the evening, then I’ll have a break and a cup of tea, then I’ll go back to playing my Nintendo.”

Kit, who lives in East Renfrewshire in Scotland, owns around a dozen games, such as Scrabble, Family Fortunes and Art Academy. She says that Brain Trainer had scored her a mental age of 64 – more than a third younger than her real age.

Here’s Kit explaining her passion for Nintendo’s handheld device: