Sony says it has sold more than 5.3 million PlayStation 4 consoles since the new-generation gaming system debuted in November.
Microsoft has not released sales figures for its competing Xbox One for the equivalent period.
But data from industry analyst NPD Group shows Sony sold twice the consoles of Microsoft in the US in January, Sony claims.
In a lucrative month, Americans spent US$241 million (NZ$290m) on videogame hardware, predominantly consoles.
In January 2013, that figure was US$205 million (NZ$247).
