This dual presentation will explore common play elements in location-based games. We’ll analyze the popular "Check-In" mechanic (used by products like FourSquare and GoWalla), and take a look at the business and social forces that have influenced its emergence as the popular geo game model. The presentation will compare current location-based products, charting their strengths and weaknesses to identify where we believe large areas of opportunity exist in the market. We’ll evaluate the challenges and untapped opportunities of Geo Games from the technological and design perspectives of the two presenters. We’ll outline how the limitations in location technology can be an elegant part of the game design itself, and how new innovations will help to create richer and more immersive parallel worlds. We’ll describe why we think its time to move beyond "social" Check-In systems, to “true games” that engage, challenge, and stimulate players.