MadWorld
From the Wiki entry:
In MadWorld, Varrigan City has become a target for a group of terrorists known as "The Organizers". The Organizers have taken over the city and transformed it into the setting for a game show called Death Watch, where the city's citizens are being forced to fight for their lives against mysterious enemies, for a prize of 100 million dollars.
MadWorld has been the subject of controversy in the United Kingdom due to its violent subject matter. John Beyer, director of mediawatch-uk, has expressed his distaste over the game's content, stating his desire for it to not receive a rating from the BBFC, which would effectively ban it from being sold. He stated "We need to ensure that modern and civilized values take priority rather than killing and maiming people." European fans' response to the organization have been hostile, accusing mediawatch-uk of being "cowards" and "narrow-minded bigots.
Looks like the Wii finally has a game that I need to buy. It's been a while since I've actually bought one.
(I tried to look for an already existing thread, but didn't find one.)