Graffiti World is a cancelled platform game that was in development by Magenta Software around 2010 / 2011, planned to be released on Playstation 3. As far as we know the game was never officially announced by Sony nor the team, but as happened with their other canned game “Broken” some screenshots were shared online by former Magenta Software developers and artists.
In these images the game looks similar to Little Big Planet / Tearaway, with a world made of paper you would have been able to color with graffiti, using the PS3 move controller. Unfortunately we don’t know more about Graffiti World. Screenshots from this lost game are preserved in the gallery below, to remember its existence.