MadWorld (2009)
This cel-shaded, monochromatic (save for crimson blood) slash-em-up was released exclusively for the Nindendo Wii, a console that was generally associated with children and casual gamers. While its violence was comparable to plenty of stuff on the Xbox and PS3, its brutal, over-the-top savagery was further underscored by the fact that it shared shelves with Mario, Kirby, and Donkey Kong.