Tetsujin 28-gou is a 1956 manga written and illustrated by Mitsuteru Yokoyama, who also created Giant Robo. The series centers on the adventures of a young boy named Shotaro Kaneda, who controls a giant robot named Tetsujin 28, built by his late father.
The manga was later adapted into four anime television series, a Japanese television drama and two films, one live action and one animated. Released in 1963, the first series was among the first Japanese anime series to feature a giant robot.
In the final phase of the Pacific War, the Imperial Japanese Army were developing a gigantic robot 'Tetsujin 28-gou' as the secret weapon to fight against the Allies. However, Japan surrendered before they could complete its construction. After the war, Dr. Kaneda (the developer of Tetsujin 28-gou) passed his robot to his son Shotaro Kaneda.
In Sandlot's videogame adaption, released July 1, 2004, you control Tetsujin 28 from the point of view of Shotaro Kaneda—able to control both Shotaru and Tetsujin 28. The control method is slightly simplified compared to Sandlot's other giant robot games such as Robot Alchemic Drive, in that you are not asked to control each leg separately. But you gain the ability to fly Tetsujin 28, and well as have him pick up buildings, enemies, and even Shotaru.