Ninja Gaiden is a series of video games by Tecmo featuring the ninja Ryu Hayabusa as its protagonist. The original arcade version, first two NES games and Game Boy game were released as Shadow Warriors in PAL regions. The series gained popularity on the 8-bit Nintendo Entertainment System for its tight action-platform gameplay, catchy music and, according to G4's X-Play, for being the first console game to have the story presented in cinematic cutscenes. The 8-bit trilogy was enhanced for the 16-bit Super NES in 1995. Sega also released two Ninja Gaiden games for the Game Gear and Master System, the latter only for PAL regions.