I lived in some sort of dystopia where I was part of a program to train youth to be killers and soldiers. Our class comprised of maybe a hundred students, and we were divided into three armies and made to compete with each other on these big indoor fields that simulated various outdoor environments. Some events were races to acquire resources before other teams, others were outright combat. Sometimes the fields were combined into one massive field for mock wars. I seem to think that almost anything was allowed, and not everything on the field was supervised or documented, just results. In this way, students were free to employ whatever methods they saw fit without fear of repercussion.