Location based games have seen the translation of popular boardgames into mixed reality settings through the integration of mobile phone technologies. This paper explores modifying the game of Monopoly from a boardgame to a locative mobile phone based game utilising NFC and QR code technologies to engage players with real world places. In doing so, the mechanics, rules and motivations for playing the game shifted in the prototyping of the game concept. Here, we outline the initial game design process, problems and possibilities in modifying such a well-known game to the city streets. We also detail how the mechanics of the game were updated to provide some solutions to ideas surrounding property values, social media values and player location in the new game design.