That helped Kyoto-based Nintendo, which creates Super Mario games, report a better-than-expected October-December profit of 64.7 billion yen (USD 569 million), more than twice its same-period profit in the previous year.
Investors were unimpressed, sending Nintendo stock sinking 2 per cent in Tokyo trading. The stock had already slipped when the price for the Switch was announced earlier this month.
The Japanese video game maker also kept unchanged its original target of selling 2 million Switch consoles in the first month after its launch, despite speculation it might aim higher because of brisk pre-orders.
But Kimishima said the company did not want to go into the red.
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Game makers often keep prices low, even taking a loss on each machine sold, in hopes of boosting sales and making up for the loss later with game software sales.
Also today, Nintendo said production of the Wii U home console had ended for all markets. The company had said earlier it planned to end Wii U production but had not given a date.
Kimishima said interest was growing for Pokemon among young children, including those who had never played the game before but were now playing with parents who grew up with Pokemon.
Making Nintendo games available on smart devices was also wooing younger players, he said.
"Whether we can get them to buy the second or third game software is our challenge," Kimishima said.
Nintendo resisted switching to games on cellphones for years, fearing that could erode sales of its own consoles. But it made its big push into mobile with "Super Mario Run" for the iPhone, which launched late last year. It now has recorded 78 million downloads, according to the company.
"This is so unpredictable," Miyamoto added. "Smartphones are an important part of our business.