Runner2 is yet another visually vibrant game which sees you jumping from platform to platform and avoiding enemies. Much like in Patapon, music plays a huge part in Runner2, though the dull thud of the PSPs drums are replaced by upbeat music. Alarm bells should start to ring when you learn that Charles Martinet famous for voicing Mario also lent his voice to the cutscenes and menus of Runner2. As we have learned on this list, Mario games are far from the light hearted mushroom-chomping extravaganzas we once thought they were. The visually hyperactive game seems inoffensive enough until the Slender Man randomly makes a cameo appearance, stalking you through the whole level. This appearance of the malevolent being who originated on an online forum completely clashes with the games bright presentation. This contrast makes Slender Mans appearance all the more unsettling. Combine this with the fact that he is just shown lurking ominously in the background rather than interacting with you and all of a sudden this appearance becomes one of the darkest secrets in video gaming.