Fittest on Earth The Story of the 2015 Reebok CrossFit Games. Word Search Puzzle Solver. Fittest on Earth The Story of the 2015 Reebok CrossFit Games word Search Puzzle Game. Find words related to movie actors, actresses, and genres. Word Search Puzzle Solver. The fittest athletes on Earth take on the CrossFit Games the ultimate test of fitness to prove that they are the fittest on Earth. This includes identifying and searching for words that are related to : Tia, Ben Smith, Mat Fraser, Sara Sigmundsdottir, Annie Thorisdottir, Documentary, Clair Toomey .