This study introduces the concept of microgames to support situated learning in order to foster situational awareness (SA) of planners in seaport container terminals. In today's complex working environments, it is often difficult to develop the required level of understanding of a given situation, described as situational awareness. A container terminal represents an important, complex node in the multimodal transportation of goods. Many operations have to be planned in order to ensure a high performance of the whole system. To evaluate the relation between SA and planning task performance, the authors conducted tests with 142 participants. They evaluated the role of SA in integrated planning activities, and the playability and usefulness of the microgame. In conclusion, the authors can state that SA is very conducive to integrated planning tasks in container terminal operations. The microgame approach allows for an enjoyable game activity, while providing a meaningful situated learning experience towards SA.