uGASP is an OSGi based middleware dedicated to ubiquitous multiplayer games. This middleware is built on top of the iPOJO service oriented component model. This demonstration enlightens the benefits of an OSGi / iPOJO approach to make a flexible, modular and configurable middleware. Moreover, it introduces our component model to provide ubiquitous gaming services to the hosted game server logics. Finally, it presents the first ubiquitous service for uGASP which enables to create multiplayer location-based games.