In this paper, the authors explore the possible contribution of serious games for advanced academic and/or professional learning in particular to support the decision-making andmanagement of complex infrastructures, such as utilities, ports and wind farms. The developments of the computer industry make it more attractive to add computer technology into simulation games to make the results of the game more realistic and so achieve more learning with the participants. In the future this will be more important to make the games still attractive for the players, because they are grown up with computers, e-learning and online communication. An example of a case study of SIM Maas, a simulation game about the development of the Port of Rotterdam (PoR), will be given. This case illustrates the use of computer-based simulation-games for professional learning.