TOKYO (AP) — Nintendo Co. sank to a worse-than-expected loss for the fiscal first quarter on lagging Wii U and 3DS video-game machine sales. [...] the Japanese company behind Super Mario and Pokemon games stuck to its annual forecasts Wednesday for a 20 billion yen ($196 million) profit on 590 billion yen ($5.8 billion) sales. Nintendo has been fighting to maintain profits amid competition from games and social media apps on smartphones and other mobile devices. The company also faces competition from rivals Sony Corp.