: Adds new bosses, such as a giant statue in the early stages, and includes revamped level designs with more linear paths. Sigma 2 vs. Original Ninja Gaiden II
: Includes "Ninja Race," a time-based survival mode, and "Tag Missions," where you can switch between two characters in enemy horde stages. Ninja Gaiden Sigma 2
: The game features a refined dodge mechanic and faster "Ultimate Techniques." Life bars now automatically replenish a portion of health after combat, reducing reliance on healing items. : Adds new bosses, such as a giant