Top three smash hit items in mankind's set of experiences are:
Harry Potter Books: The Harry Potter series, wrote by J.K. Rowling, holds the record for being the smash hit book series ever, with more than 500 million duplicates sold around the world.

iPhone: The iPhone, made by Apple Inc., is the smash hit cell phone to date, with more than 2 billion units sold around the world.

Rubik's 3D shape: The Rubik's Block is the top rated puzzle toy to date, with more than 350 million units sold overall since its presentation during the 1970s.

While rankings might fluctuate, these three items have without a doubt made a critical imprint on worldwide culture and business.