Differences in main b.models Degree of integration between game and biz design Revenue model Service design emphasis Marketing emphasis Pricing Customer relationship emphasis Retail Large amount of initial content Advertising Single price Acquisition Subscription Long-term engagement of users Time-based Retention “ free-to-play” / Virtual good sales Monetisation through incentivising service design Creating demand via game mechanics Microtransactions - emphasis on meeting the willingness-to-spend by price discriminating Acquisition, retention, monetisation