cartoon type landing page logo for web based game

I need a landing page image for an online game. Game will include rated content (possibly drugs, violence, and sexually suggestive, I have not read the entire game outline). Consider that prior to bidding on project. The client is after "Grand Theft Auto" spray paint graffiti type cartooning. Submit a sample (you can invent the game name for sample purpose). Game name will be supplied to artist awarded project. Having played "Grand Theft Auto" type games and sprayed some real life graffiti may be an asset. If the client is impressed with price, quality and creativity, selected bidder will likely be awarded much more graphic work for this and future projects (client has about 16 online game projects underway).