In Japan, the Mega Drive sold poorly against its two main competitors, Nintendo's Super Famicom and NEC's PC Engine. However, it sold well in North America, Brazil, and Europe. Some of the reasons it sold well is because it had many arcade game ports, Sega's "Sonic the Hedgehog" series, several popular sports franchises, and an aggressive youth marketing that made the system seem like the cool console for teens. Controversy about violent games such as "Night Trap" and "Mortal Kombat" led Sega creating the Videogame Rating Council. It was a predecessor to the Entertainment Software Rating Board (ESRB).