This page is for the 1994 Super Nintendo Entertainment System video game. For the 1980 arcade game, see SOS (arcade game).SOS, known in Japan as Septentrion (セプテントリオン), is a survival adventure video game developed by Human Entertainment and published in 1994 by Vic Tokai for the Super NES. A sequel to the game was later released in Japan for the PlayStation known as Septentrion: Out of the Blue.