The Telegraph says it is "comfortable to hold," has "a real sense of fun" but has a "cumbersome" CPU and "lacks a real system seller" game.
The Guardian says its multiplayer games are "enormous fun" but the split controllers and screens are a "difficult proposition."
Gamespot likes its "exciting innovations" but isn't as keen on its "cheap hardware" and "clunky OS".
Techradar thinks it's "wonderful" to finally see Mario in HD and a "fantastic perk" to be able to play your console without a TV, but criticised the GamePad's battery life and range of available games.
Nintendo Co Ltd has promised it will return to profit this year, helped by a weakening yen, after posting its first annual operating loss on shrinking sales of its ageing Wii gaming console and weak demand for its new 3DS handheld device.
For the current financial year to March 31, Nintendo predicted operating profit of 35 billion yen (£265.5 million), compared with a consensus estimate of a 40 billion yen profit.
The operating loss of 37.3 billion yen (£283 million) in the year just ended compared with a consensus estimate of a 41.4 billion yen (£315 million) loss.