Why is Waiting for Godot a popular play?

Waiting for Godot qualifies as one of Samuel Beckett's most famous works. Waiting for Godot incorporates many of the themes and ideas that Beckett had previously discussed in his other writings. The use of the play format allowed Beckett to dramatize his ideas more forcefully than before, and is one of the reasons that the play is so intense. Please check out the GradeSaver link below, it will elaborate further:

http://www.gradesaver.com/waiting-for-godot/study-guide/about/