Experiential and Relaxation Virtual Reality as a Tool for Easing Anxiety in Seriously Ill Children

The goal of this clinical trial is to assess the use of experiential and relaxation virtual reality (VR) interventions in easing anxiety and other distress symptoms in children with life-limiting and/or life-threatening conditions (LLC/LTC). The main questions it aims to answer are: 1. Does experiential and relaxation VR help to decrease anxiety in severely ill children? 2. What effect does it have on pain and fear? 3. Is there a difference between experiential and relaxation VR in the observed outcome measures? 4. How is the newly developed relaxation VR app BreezeTerraVR perceived by children with LLC/LTC? 5. How do caregivers of the patients perceive VR as an intervention tool for psychological distress? Researchers will compare baseline levels of outcome measures (e.g. anxiety) to post-intervention levels to determine if there is an effect. Participants will: * Experience both types of VR interventions-experiential and relaxation VR-for 7 to 15 minutes in two sessions (the number of days between sessions will depend on each child's medical plan), the order of interventions is randomized. * Fill out a set of short questionnaires before and after each intervention (approximately 5 minutes per phase).