A challenge-based learning experience is a learning experience where the learning takes places through the identification, analysis and design of a solution to a sociotechnical problem. It is typically multidisciplinary, takes place in an international context and aims to find a solution, which is environmentally, socially and economically sustainable. Challengebased learning has become a buzzword in the last decade, following the US National Academy of Engineering creation of a list of “grand challenges” for engineering for the 21th century. Since then, many universities have introduced challenge-based learning in their educational offerings. However, there has so far been little overview or comparison of possible implementation of challenge-based learning experiences. This paper aims to address this gap by reviewing and comparing four selected challenge-based learning experiences. We identify commonalities and unique traits amongst them and identify avenues for future development in this area.