The U.S. video-game industry experienced a particularly rough month in April, with its worst year-over-year sales decline since last summer, according to NPD. “Microsoft's Xbox Live 1600-point game card was the top-selling accessory for the month for the second month in a row -- coming out ahead of game controllers, memory units and other items, according to NPD. Microsoft reported 23 million Xbox Live members as of the end of 2009, up from 17 million a year earlier. Microsoft's Xbox 360 sold 185,400 units, Sony Playstation 3 came in at 180,800, Nintendo's Wii was still No. 1, although it declined substantially, from 340,000 last April to 277,200 units this time. Nintendo DS continued to reign in handheld market with 449,800 units sold, compared with 65,600 for Sony's PlayStation Portable (116,000 a year ago). The top game for the month was Splinter Cell: Conviction for Xbox 360, which sold 486,100 units in U.S., according to NPD. That was more than twice the unit sales of the second-place game, Pokemon SoulSilver Version for Nintendo DS. Overall, sales of video-game hardware, software and accessories in U.S. were down 26%, to $766,200, from more than $1 billion in April last year,” revealed NPD.