I played a 10-day game of tag in college. (Called Humans vs Zombie, “humans” were able to tagged by zombies any time that they were outside. We would start with ~150 humans, at the beginning, and by the end of the game only ~30 were not zombies.)
The amount of work that the core-team put in to run the game was insane: reserving space on campus, marketing it to students, defining and refining rules, communicating with campus security, negotiating with campus administration, dealing with rule violations, and more.
I think it’s a shame that it’s so much work to put together and play what is ultimately a very simple game with very little potential to harm anyone. But there are a lot of people who are scared and uncomfortable when other people start running around.