Another hot, fresh loaf of financial data has been pulled out of The NPD Group's analytical oven, and its buttery goodness contains sales information for the four week period between April 4 and May 7, 2013. During that time, the physical retail sector of the games industry was down 25 percent when compared with its performance over the same four weeks in 2012, pulling in a grand total of $495.2 million. It's worth noting, however, that this figure does not include the sale of PC games.

Hardware sales brought in $109.5 million, a 42 percent decrease from the $187.8 million seen last year. Meanwhile, the brief reprieve from year-over-year decline seen by the Accessories segment last month was short lived, as in April it by dropped 19 percent to a total of $131.4 million.

Software sales (including PC games) topped out at $267.8 million, with NetherRealm Studios' Injustice: Gods Among Us taking top honors as the best-selling game for the period. Dead Island: Riptide and BioShock Infinite rounded out the podium in spots two and three respectively - meanwhile MMO/Syfy series Defiance debuted in fifth. As always, scope the full list after the break.