PX Challenge 2026 tasks participants with taking on the role of a start-up exploring commercial drone R&D and applications in Singapore's urban landscape. Participants must complete interconnected disciplinary tasks: comparing virtual drones vis-à-vis operations in real world environments, technical requirements for operations, conducting site-specific analysis, solving optimisation problems and finally synthesising and applying these concepts in a 3 – 5 min video proposal of an ethical drone solution that either addresses a community need, mitigates an environmental problem or captures economic opportunities. The challenge requires participants to demonstrate technical understanding, conduct field research, apply mathematical analysis, and integrate interdisciplinary knowledge to propose feasible solutions for a Problem X of their choice within the general theme.