I think I would recommend not letting him play. Possibly call 911, or bring him to a hospital.
Some psychotropic medications can result in lucid dreams, it has also been proposed that some forms of fungi can enhance ones capacity to be able to interact with dreams but this is incredibly dangerous in practice. Usually attaining a healthy amount of sleep (8hrs a night) as well as being aroused before you adequately release from NREM sleep, can help you recall a dream.
If some living things do not reproduce this could be considered a defect or a genetic mutation in those people. If we take humans for example, if most humans reproduce and some don't because they cannot (if a guy cannot produce sperm) this doesn't mean that he isn't alive, it just means he was born with a genetic mutation which doesn't allow him to produce sperm needed for reproducing.
The defining difference is the fact that those with anxiety blow things out of proportion much more frequently and with much more intensity than someone who is struggling with worry thoughts about something,” Forshee says.
