Follow his instructions, then make the counter have a target value of 1, then place a wire repeater that has a 3.0 second delay, connect a wire from the counter to the repeater, when Target value reached → …, then place a checker that has 1 check, all checks must pass by the way. Connect a wire from the wire repeater to the checker, … → Run Check .Get a property device and name the property “Player Count”, then go to counter (as said the in guides instruction) and go to property, click track property, and make the property “Player Count”. Go back to the checker and make the checker check a value of a property, and make the property “Player Count”.
Should look something like this:
Then, place a device to End the Game. Connect a wire from the Checker to the End Game Device. Checks Passes → End Game
Sorry, still limited pictures for right now. Your player counter + plus automatic game end-er should look something like this: