Achievement systems are secondary reward systems that have been developed for digital games. Players can complete optional sub-goals to earn achievement rewards that are visible to other players. As many sub-goals require thorough exploration, new play styles, and virtuosity, achievements are a relatively cost-efficient way of extending the lifetime of a game.
We explore the application of achievement systems beyond videogames by including one such system to a geo-tagged photo sharing service called Image Space. We discuss how people perceive this additional content in the service.