The long-awaited Japanese launch comes after a stellar debut in the United States and Europe where more than 5.4 million units have been shifted since November, offering a bright ray of hope to Sony after years of gloomy sales of its key consumer electronics goods.
At midnight (1500 GMT Friday), the first 100 customers were allowed to take home a new console from Sony Building, a flagship display venue in Tokyo's bustling district of Ginza, putting the lucky few fans hours ahead of a nationwide mass release.
Some of the eager fans had queued for the past two days to be among the first in Japan to own the new console.
"I want to play games with state-of-the-art technology," said Tetsuya Tamura, a 44-year-old IT engineer who arrived on Wednesday with his son, Shion, 19, to take first place in the queue.
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Early adopters of the PS4 in Europe and the US have enthused over its vast computing capacity and the cinematic graphics it makes possible.
In the coveted US market, Sony boasted that video game industry sales data, reported last week by NPD Group, showed PS4 is far outselling Microsoft's Xbox One consoles, also released in November.
Analysts say sales at home are expected to widen the lead.