 However, certain enemies can break his guard—either through particularly strong attacks or by grappling him.The second option is to make Ryu dodge, by rolling away from the attack in a maneuver called "reverse wind".Inspired by the 1990s "Ninja Gaiden" series for the Nintendo Entertainment System (NES), the 2004 version was originally set in a re-imagined game world based on another Team Ninja creation, the "Dead or Alive" ("DOA") series of fighting games.