Mark Cuban said Monday that Nintendo "has a winner" with "Pokémon Go," but added that the game's producer, Niantic Inc., which Nintendo has invested in, would "have to keep refreshing if they want it to stay as hot as it is."
"It's fun," Cuban told Business Insider in an email. "Parents will love it because it gets their kids walking and moving in order to play."
The brash billionaire and host of ABC's "Shark Tank" said "Pokémon Go" would also need a feature that would turn off the program while riding in a car because "that's cheating."
"Pokémon Go" is a new app that uses your phone's GPS to create an augmented-reality world you traverse to catch Pokémon. Nintendo added $9 billion worth of market value since the game was released last week. And on Monday, Nintendo saw its largest one-day increase in its stock since 1983.
"Nintendo has a winner," Cuban said. "Is it worth 9b in market cap? I don't know."
He added that he has played the game and it's a "great way to take a walk with my son."
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