To answer this question, we organized three different hackathons with students of the University of Applied Sciences Düsseldorf (HSD), who combined their various skill sets to develop the following three applications:
VR Food: While eating actual food, the user sees something different through the VR glasses, for example a bug instead of chocolate or a moving and talking jelly instead of an ordinary one.
The Cave: The users see LED surfaces that look like a glass front, which they need to defend cooperatively against approaching geometric forms.
Factory VR: a cooperative game in which the players move in a single tracking area of 6 by 6 meters and need to coordinate and complete different tasks.
Each of these hackathons had a duration of 24 hours. Apart from examining several interesting topics, we were also able to gather experience regarding how such an event can be successfully planned and executed.