The first season that was aired in America was not the beginning of Yugioh. It was actually the second season, but because the licencing companies thought the first season was too violent and graphic they decided to make it look like season 2 was in fact season 1. In the first season Yugi becomes completly possessed by the spirit and exacts violent and painful vengence on people for thier crimes against humanity. I suppose they decided that this was not best suited for the younger audience the dub was clearly geared towards.