A special phase designed for battle-hungry fans of the series.
Each chapter contains a hidden crystal skull that acts as a gateway to a special boss battle area, where you can put your skills to the test against the deadliest bosses of the Ninja Gaiden series!
An endless battle waged in the area where Ryu has fought off nigh-certain death countless times before. Powerful enemies Ryu has fought previously return, fueled by anger and bloodthirsty vengeance.
Crystal skills hidden throughout the world.
The key to challenging the Boss Battles.
The key to challenging the Boss Battles.
