Online innovation contests represent one of the most interesting new ways of utilizing creative skills in the new collaborative economy, but we still know very little about what motivates the problem solvers. Previous studies suggest that the economic reward is not the only motivational factor, but there are many other motives too. The aim of this research study is to identify the core motivational dimensions based on the experiences of top solvers in three different types of online innovation contests. The empirical findings are used to construct a motivational typology for creative problem solving that can guide future research.