The PBG approach emphasises the meaning of authentic learning tasks, experiential learning and collaboration. Because games usually allow players to creatively test hypotheses and reflect on outcomes in the game world, experiential learning theory provides an appropriate basis for PBG. In fact, a game itself is a big problem that is composed of smaller causally linked problems (Kiili, 2005b). On the other hand, the authenticity of learning situations and tasks is assumed to be a very important factor in facilitating higher order learning (Brown, Collins & Duguid, 1989), at least in higher education. The basic idea is to anchor the learning of knowledge and skills into meaningful problem-solving situations encountered in everyday life. The situated learning theory supports this view by stressing that learning is a context-dependent activity (Brown et al, 1989). Such an approach supports the transferability of learned knowledge and skills into the practice (Savery & Duffy, 1995). In games, the storyline and the game world can be used to contextualise the problems included. Furthermore, the collaborative nature of problem solving is emphasised.