Sega is cranking out a multitude of mature titles for various platforms, Wii included. First we've got MadWorld by PlatinumGames, and now Sega just announced a new entry in their House of the Dead series for the console titled The House of the Dead: Overkill, which will be an on-rail shooter similar to the previous titles in the series. Agent G, one of the protagonists from the series, will make a grandiose return, though we've also got a new character named Detective Washington.