One of our programmers asked me to pass this along:
Get all agents that are participating in the current fort_playspaceexperience. Participants might be human players (ofplayertype) or AI-controlled characters (ofagent type) that are registered and affecting the participant's count.
The last bit is important: and affecting the participant's count … if their NPC is not increasing the amount of total player count, it wont be part of the GetParticipants() list.
Is this a function to be used for something that will come in the future? (Test Players on roadmap). Are there any spawnable npc’s/AI in the current build that increase the player count?