Before I discuss MadWorld, I'd like to tell you about the developer. PlatinumGames is a very new company founded by Shinji Mikami, Atsushi Inaba and Hideki Kamiya, all once key members of Clover Studios (Viewtiful Joe, God Hand, Okami) before it was closed down by Capcom in 2006. Mikami is famous for creating Resident Evil, Kamiya directed both Viewtiful Joe and Devil May Cry, and Inaba was a driving creative force behind Viewtiful Joe, Okami, and God Hand. As you can see, these three together hold to their names some of Capcom's most critically acclaimed titles and series.
MadWorld is a brutal action game that puts you in a game show that forces you to kill as many people in the most entertaining ways possible. You control Jack, and must destroy opponents by any means necessary, especially if they're gory methods. The designers have stated that their intent was to make the violence so excessive that it was actually funny, and their word can be seen in previews and videos, as can the previewer's glowing words about it's design and gameplay. The game has been lauded for it's use of Sin City-esque art style and it's gruesome humor. For example, players can impale enemies with a Caution sign. Further humor is brought in through the game show's announcers, who are voiced by John Dimaggio (Bender from Futurama) and Greg Proops (Whose Line is it Anyway?)
MadWorld brings to the table unique art style, hilariously excessive violence, skilled comedic voice acting, solid gameplay, and one of the most brilliant design teams of the last decade.