During recent years modern ICT technologies have spawned two interwoven phenomena: gamification and crowdsourcing (CS) . The rapid diffusion of these technologies can be seen both in industry as well as in the academia. Today, multitude of different organizations employ CS as a way to outsource various tasks to be carried out by ‘the crowd’; a mass of people reachable through the internet. At the same time, business analysts have estimated that at least 50% of organizations have gamified some of their processes by 2015. As illustrated in the Figure, the body of literature on both CS and gamification has been rapidly growing. Moreover, these technologies appear together frequently: CS is one of the major application areas for gamification. Naturally, the main goals of CS in general are either cost savings or the possibility to innovate solutions that would be difficult to cultivate in-house. However, CS relies on the existence of a reserve of people that would be willing to take on tasks for free or for a minute monetary compensation. Therefore, CS tasks are increasingly gamified, that is, organizations attempt to make the activities more like playing a game in order to provide other motives for working than just the monetary compensation.