Several players are selected to be in the group, how many depends on how many people there are playing. An ideal number is about five or six. One of the people in the group is chosen to be "it" she is then blindfolded. Everyone else then sits down in a circle. The blindfolded player must then try to find all the people in her group, by walking around the circle and feeling each person in turn. When she thinks she has found someone who is in her group she asks that person to stand up. Once she has identified everyone she thinks is in her group. She asks "Is that my group" The leader can then either reply yes, in which case she can remove her blindfold otherwise she has to stay blindfolded and eliminate her wrong guesses and try to find the correct people in her group.
Source: From the original site.(Submitted by: Nicola)