Japanese video game maker Nintendo has returned to the black for the first nine months of the fiscal year but remains pessimistic about sales prospects.

The maker of Super Mario and Pokemon games and DS consoles said that profits in the nine months from April to December came to 14.55 billion yen ($160m).

This was a reversal from the 48.35 billion yen loss reported a year earlier.

Nine-month sales inched up 2.4% to 543 billion yen ($6 billion). 

But Nintendo, which did not break down quarterly results, is not upbeat about its sales prospects and lowered its full year sales forecast.

It said it is expecting to sell four million Wii U consoles for the fiscal year, down from its earlier estimate of 5.5 million units. The Wii U went on sale late last year.