Edge Online has a lengthy feature on Platinum Games' history and future:
Platinum’s debut game was MadWorld, a 2009 Wii exclusive that combined an unforgettable black-and-white visual style with over the top ultraviolence. It received an Edge six, falling at the low end of the scale, with an overall Metacritic score of 81. Sales were poor, too, serving as a stark warning to other third parties thinking about the Wii. MadWorld tanked.
An interesting look at a company that isn't afraid to take risks.