How to count number of children in a folder?

Making a last man standing game mode. i have a folder in the workspace that stores players called "Ingame". I want to end the game when the folder reaches a number of one. How do I constantly check the value of the folder?

Though the above is correct, there are even better ways of doing such. To get player count, one can just use one line of code

#game.Players:GetChildren() --This returns the number of players

Additionally, one can further streamline it by turning the while wait() do into a function triggered by an event.

game.Players.PlayerAdded:Connect(function(plr)
	if #game.Players:GetChildren() <= 1 then
		--Code to end the game.
	end
end)

I hope this helped, if you have any comments or suggestions, please comment down below!

Actually pretty easy: just create an array with the children and get the lengh of the array like this:

local count = 0
for _,v in pairs(game:GetService("Players"):GetPlayers) do
	count = count + 1
end

with the loop applied it would look like this:

local playerarray = --whatever you store the player is idk

local playercount = 0
while wait() do --the wait() is for the while loop to not timeout
	for i, player in pairs(playerarray) do
		playercount = playercount + 1
	end
	--now the check if the player count is 0
	if playercount <= 1 then
		--run code
	end
end