The XR Brain Jam is an innovative, collaborative hackathon that pairs XR developers and digital creatives interested in creating XR experiences that drive meaningful impact with domain experts focused on addressing a specific issue (medical, environmental, education, etc). These cross-discipline teams are led through a structured workshop experience followed by a multi-day jam, where teams develop a working prototype of their concept. Teams are then invited to share their work with a curated panel of experts. These experts are chosen from a variety of fields to give teams maximum value feedback, including funding, design, distribution, marketing, and development. The final prototypes created at the XR Brain Jam will be featured in the arcade during the G4C Festival and XR4C Summit.