This project-based course gives the students the opportunity to work on an individual project or participate on one of the currently running projects within the Human-Computer Interaction Laboratory or Visitlab. Students can enroll to this course repeatedly which enables them to establish a long-term collaboration with these labs. Within the HCI lab, students are working namely on topics related to new forms of multimodal interaction based on virtual reality techniques. The work concentrates on algorithmic and system problems of computer graphics in general, interfaces, position detection, haptic feedback, and interconnection of solutions into functional systems. In Visitlab, students can join one of the long-term projects, related to visualization of molecules (proteins, DNA), criminological data, geological phenomena, medical data, and options to explore them in virtual environments.