Two items such as chairs are set up to form a "doorway" One player is selected to be the Gate Guardian. They then stand in between the two chairs. The chairs sould be set about 6 feet apart. The Gate Guardian is then blindfolded. One by one one of the sighted players try to make it past the guardian without being caught. If they make it through they return to the start and wait their next turn. If they get caught they become the next Gate Guardian.
Source: From the original site.