House of the Dead: Overkill and MadWorld -- unfortunately, the same can't be said for the game purchasing population of the world. The two games' sales were far from stellar, but Sega isn't ready to give up on developing family unfriendly titles for Nintendo's home console.
In a recent interview with GamesIndustry.biz, Sega MD of European development, Gary Dunn, explained that the company's outlook on its two grown-up outings is far from grim -- he even claimed that "House of the Dead: Overkill was a profitable title." He went on to explain, "Whilst MadWorld commercially didn't sell what we were expecting I wouldn't say it's game over for mature Wii titles from Sega." Hopefully the company's persistence will be rewarded, if only to ensure a few dozen sequels to Overkill. (Overkill 2: Superfluous Murder, Overkill 3: The Overkillinest, etc.)