Ninja Gaiden is an arcade game released in 1988 in North America by Tecmo. This game is known in Japan as Ninja Ryūkenden and in Europe as Shadow Warriors. In North America, it saw domestic releases on the Atari Lynx and PC (DOS based) as Ninja Gaiden. In Europe, it was released for the Amstrad CPC, Commodore 64, Commodore Amiga and ZX Spectrum as Shadow Warriors. It was brought to the Nintendo Wii's Virtual Console on July 28, 2009.