Crane lifts for bulky module installation greatly affect site safety and efficiency. However, few previous studies addressed collaborative training for a lifting crew in modular construction. Therefore, this paper aims to develop a virtual reality (VR) system for enhancing multi-role collaboration in crane-lift training. The system is developed by integrating full-, semi-, and non-immersive VR devices with role-specific functions designed for crane operators, riggers, and signalers in modular building projects. The system is objectively assessed by six groups of researchers with memory tests and proved more effective in group-based crane-lift training than the lecture-based approach, resulting in a 33% improvement in the trainees' memory stability. The system is also evaluated by the researchers and six industry practitioners who affirm that their understanding of the crane-lift process is enhanced through multi-role collaboration using the system. The developed multi-user VR system should facilitate safe and efficient delivery of modular buildings.