The consoles are being trialled in six stores - Birmingham, Kingston, Amersham, Wimbledon, Basingstoke and Cardiff and will also be supported with a range of both Nintendo and third party software titles.
Buying director Stuart Grant explained the firm's decision: "We've seen a decline in the board games market for two years in a row now. A massive, massive dive in what was a big slug of our market.
"Nintendo budgeted for sales of one million consoles last year and they ended up selling two million. You just can't ignore that market anymore.
"We do things differently. Last year we were 15 per cent up in a an industry two per cent down. You can't just sit there and wait for the toy industry to happen. We started taking on Mars sweets last year and now it's 1.2 per cent of our turnover. We took on greetings cards too and that is all incremental business. Independents are still quite sleepy in what they're doing but you can't afford to be."