Spoilers for all 3D Ninja Gaiden games preceding this one, including Ninja Gaiden II (2008), as well as the Dead or Alive games, up to Dead or Alive 4 will be left unmarked. You Have Been Warned!

Ninja Gaiden 3 is a Stylish Action-Adventure game originally released in March 2012 for both the PlayStation 3 and Xbox 360. It's the third game in the Ninja Gaiden modern revival series.

Set after Ninja Gaiden II (2008), Ryu receives a direct request from the Japanese government after terrorists take the British Prime Minister hostage, demanding his appearance. Travelling to London, he meets the enigmatic "Regent of the Mask", who places a curse on Ryu's right arm, making him feel the pain and hatred of the people he killed, while sealing the Dragon Sword within his body. With the "Grip of Murder" curse slowly consuming his body until he succumbs, Ryu has to defeat the Regent and his "Lords of Alchemy" before they remake the world within seven days.

Ninja Gaiden 3 marks the return of scriptwriter Masato Kato to the series, who brings back story elements of the Nintendo Entertainment System trilogy following their absence in the prior modern games. New mechanics for the game includes "Steel-on-Bone", a cinematic-based attack that instantly kills an enemy upon a button press, Optional Stealth to sneak up on Mooks for a One-Hit KO and Competitive Multiplayer, a first for the series.

In 2012, the game received an Updated Re-release as a launch title for the Wii U (January 2013 in Europe), subtitled Razor's Edge. This version adds traditional dismemberments (which were removed in 3), increased difficulty, reworked game mechanics (such as Ninpo and Steel-on-Bone), additional weapons and upgrades, and more playable characters (Momiji, Ayane and Kasumi). Ports for the PlayStation 3 and Xbox 360 were released in April 2013, which include all of the Downloadable Content from the Wii U version already on the disc. Razor's Edge is also included in the Ninja Gaiden: Master Collection for PlayStation 4, Xbox One, Xbox Series X|S, Nintendo Switch, and PC.

A sequel, Ninja Gaiden 4, was released in 2025 in celebration of Team Ninja's thirtieth anniversary.

Tropes:

• Absurdly Sharp Blade: Played in an odd way in Ninja Gaiden 3 - Ryu's weapons can cut through metal, but not effortlessly − a good half of the quick-time events in the game are button mashing to cut down turrets, spider tank legs or other armored equipment.
• Action Commands: Ninja Gaiden 3 is the first game to have these with non-indicative button prompts during Steel-on-Bone attacks. Even when told to press Y, pressing X works just as fine, and vice-versa. Since Steel-on-Bone chaining works only if players you press the X button, it's sometimes better to disregard the button prompt (of course, it's possible to simply turn the button-prompts off entirely).
• Anti-Frustration Feature: Ninja Gaiden 3 allows the player to switch any time to "Hero Mode". The game plays the same as on Normal difficulty, but when Ryu's health is under 30% (when the lifebar starts to glow red), guarding and evading become automatic, making death pretty much impossible.
• Assassin Claws: The Falcon Talons are available as equippable weapons. They make up for their shorter reach with faster moves and increased lethality against unarmored enemies.
• Big Bad: The Regent of the Mask until Cliff and Ashtear Higgins reveal themselves as The Man Behind the Man.
• Call-Back: In Day 6 of Ninja Gaiden 3, the Epigonos boss can switch between a sword, a scythe, and claws, like Ryu. However, the combos it uses with the scythe and claws are from the movelist of Ninja Gaiden II.
• Camera Abuse: For additional immersion, blood will splatter on the screen each time players peform an Obliteration Technique on an enemy in Ninja Gaiden 3.
• Cosmetic Award: The Karma system, but this is averted in Razor's Edge, wherein the player spends points to upgrade weapons/Ninpo, increase health and learn new techniques.
• Cruelty Is the Only Option: Ninja Gaiden 3 has sequences where players are forced to slowly descend on helpless, disarmed Mooks and mercilessly cut them down. While the first instance is a Mook who just watched Ryu mow down dozens of his comrades and drops his gun, pleading for his life (and scared shitless), other situations has a Mook dare Ryu to kill them while lecturing the player. The game cannot progress unless Ryu kills them. Mercifully removed in Razor's Edge.
• Darker and Edgier: Ninja Gaiden 3 tries to do this to some degree, examining Ryu's habits of slaughtering every single thing in his path that obstructed his objectives and trying to pull a Deconstruction on the very notion that mass-murdering scores of people and Fiends alike is not inherently heroic, while also being visceral regarding how Ryu goes about all this bloody carnage - that it's normal to ninjas like him. However, it was considered so over-dramatized for the 3 that Razor's Edge dialed almost all of this back except from story cutscenes that couldn't be changed.
• Death from Above: A gameplay mechanic in Ninja Gaiden 3 - players can jump from a high building and glide in the air towards a poor Mook before impaling them as Ryu lands for a One-Hit KO.
• Death or Glory Attack: How Razor's Edge reworked the Steel-on-Bone attacks - rendered as form of Counter-Attack, by timing it right, players can trigger Steel-on-Bone against Mooks before after evading their Grapple Move, denoted with a specific foggy, red-colored mist, then repeat the attack on nearby enemies (upwards to four enemies in a row at maximum upgrade). If successful, all enemies killed by Steel-on-Bone will restore health; if unsuccessful, the Grapple Move will connect if players are within range of the enemy.
• Doppelgänger: The Epigonos from prior games returns and comes in two forms - the first has Ryu's form, the second has a Fiend-based transformation and can switch between three weapons like Ryu. However, they're not as aggressive as the Fiend versions and they easily fall with an Izuna Drop, even in harder difficulties.
• Easy-Mode Mockery: In Razor's Edge, playing in Hero Mode reduces Karma points earned in combat if the character's health drops to the level where guarding becomes automatic (i.e. players would have died without it).
• Escort Mission: A very brief, easy one at the end of Day 4, where Ryu has to protect Canna as multiple Homunculi jump and attack. Inverted in the same game during the Day 5 trek to find Joe Hayabusa as Momiji is the one escorting Ryu.
• Fatal Family Photo: As soon as the scientist in 3 starts talking about how Canna reminds him of his daughter back home, whom he will be seeing soon, it's obvious that this character is doomed.
• Gameplay and Story Integration: Ninja Gaiden 3 makes it a point of eliminating elements that "break the immersion" from prior games - no Hyperspace Arsenal (save for the extra weapons in Razor's Edge, but that's it), no statues that teleport players to Muramasa's Shop, no Essence Drop from dead foes (thereby changing how Ultimate Techniques work) and the save point statues are replaced by a falcon following Ryu. There are no healing items, either! Even in Razor's Edge, all methods for healing (Ninpo, meditation, Steel-on-Bone and save points) are performed directly in-game, except for life upgrades.
• Good Thing You Can Heal: One of the new techniques in Razor's Edge is "Meditation", which allows players to heal themselves by using your Ninpo energy.
• Heads I Win, Tails You Lose: The first fight against the Regent of the Mask at the end of Day 1 concludes with Ryu stabbing him for what seems to be the finishing blow, but he grabs the Dragon Sword instead, utters a few words to an incantation to activate the Grip of Murder that fuses the sword to Ryu's arm, giving him a cursed Red Right Hand for the rest of the game.
• How We Got Here: Ninja Gaiden 3 begins with the scene from the first trailer of the game − a first-person perspective of Ryu coldly assassinating an enemy and removing his mask, with chaos in the background. The player gains control of Ryu as he fights a giant humanoid monster, before the title of the game appears and the story is told as a Flashback to Day 1. Turns out the man Ryu is killing is Theodore Higgins, Brainwashed and Crazy into becoming the Regent of the Mask, and the giant monster is the Goddess using Theodore's daughter Canna as its vessel, wielding the Dragon Sword.
• I Have a Family: One of the Mooks tries to pull this on Ryu at the beginning of Ninja Gaiden 3. It works as well as expected.
• Indy Escape: Ninja Gaiden 3 is fond of triggering these, with two in Day 3 (the first to escape a napalm bombing, the second to outrun a genetically resurrected T-Rex). Thankfully, it doesn't have too much of the camera issues these sequences usually have since the camera zooms out a bit when an obstacle is close.
• Invisibility: The Ghosts in Ninja Gaiden 3 have an invisibily suit and will usually use it for surprise attacks or lob grenades at you from every direction. You can detect them with your shurikens and your bow, and they always turn visible when they attack, so they aren't that difficult to fight, but they still can be a pain at higher difficulties.
• Kaizo Trap: Chimera enemies, upon taking enough damage and dismemberment, will sometimes start to "overheat" and come at Ryu as an Action Bomb.
• Meta Power-Up: Players can purchase a power-up in Razor's Edge that allows them to accumulate Karma more quickly.
• Morale Mechanic: In Ninja Gaiden 3, using the fire dragon Ninpo will cause the weakest enemies around to drop their weapons, cower and beg for their lives. If players so chose, they can finish them off regardless.
• Nerf: Ninja Gaiden 3 indirectly did this to the Izuna Drop - it's still an instant kill technique, but tougher human-sized Mooks have to be weakened before players can lift them up, so it's not quite as overabused as in previous games.
• Our Homunculi Are Different: Homunculi in Ninja Gaiden 3 turn into Chimeras after you take them down. They are also the only enemies that beg you to kill them while they attack you.
• Perfect Play A.I.: The Regent of the Mask in Razor's Edge can be quite infuriating, as he is mostly immune to Ultimate Techniques, dodges a lot and takes advantage of every little opening in your defense − and even his basic attacks deal quite a lot of damage. Dealing with him in higher difficulties requires a perfect knowledge of his pattern.
• Pivotal Boss: The spider tank during Day 1 is more or less this, although it can attack players even without facing them directly because of its arsenal of missiles.
• Retirony: In Day 4, there's a scientist that helps Ryu traverse further to the lab and trying to rescue Canna because he has a daughter around the same age with Canna and wants to visit that daughter once he gets Ryu to his destination. No sooner as both get out of the elevator, the next enemy wave (of guards) ambushes the two and kills the scientist.
• RPG Elements:
  • The Mission Mode and online modes for Ninja Gaiden 3 has players start as a low-ranking Ninja. Completing trials will level up their character, improving combos and equipment. This is quite surprising, as the story mode in the same game removed everything that remotely looked like an upgrade system.
  • Razor's Edge rectifies story mode, but with a different mechanic: players will use Karma points to upgrade weapons, Ninpo, increase the life bar and gain new techniques.
• Score Multiplier: In Razor's Edge, after killing a few enemies, the playable character enters "Bloody Rage Mode", where their weapon/right arm starts to glow red. A fully charged Ultimate Technique will be available to use, but if players choose not to use it, a Karma multiplier will appear instead and increase each time an enemy is killed; this multipler will also appear after successful Steel-on-Bone kills outside of Bloody Rage Mode. Note than in the original Ninja Gaiden 3, the "red arm" was just the new way to activate Ultimate Techniques and didn't have any other function.
• Shut Up, Hannibal!: In the aftermath of a boss fight in 3 and Razor's Edge, said boss would go on a rant about how the humans will be cleansed. As Ryu, his job is to slowly drag himself there and make him talk with his sword instead. Literally.
• Spin Attack: In Razor's Edge, the shuriken gets its own spin attack, while most of the "hold-and-release" strong attacks in 3 involve spinning horizontally or vertically.
• Sword Beam: The double katanas' Ultimate Technique in Razor's Edge has Ryu spin rapidly before launching three of these.
• Tamer and Chaster: The original release for Ninja Gaiden 3 really tried to make the series a little more grounded, with Ryu only equipping what he has in hand, no unexplained magic save statues, etc. That also extends in the attempt of toning down the provocative designs the series has been known for under Team Ninja's hands, all new females seen are dressed quite modestly compared to what the series has provided before, with only Momiji sticking out as she still wears her original outfit. Then comes the Razor's Edge re-release, where in the same way it tried to undo some of the attempts at making the series more grounded, it also brought back some of the risqué content, such as new cutscenes with Ayane containing some little nudity and gratuitous breast jiggling.
• Video Game Sliding: Ninja Gaiden 3 has a sliding move that is useful as a dodge, an offensive technique to put enemies off balance, and a way to get under obstacles. It completes the trilogy's list of dodge moves with the first game's Unnecessary Combat Roll and the second's Flash Step.
• We Don't Suck Anymore: Team Ninja admitted that they tried too hard to catch a western audience with Ninja Gaiden 3 and ended up neglecting old fans of the series. As a result, the massive changes made to the gameplay for Razor's Edge are a mix of backpedalling to Ninja Gaiden II and its popular elements (dismemberments, Ninpo, fast weaponry), while overhauling the new mechanics in 3 (Ki system, Grip of Murder, Steel-on-Bone) and peppering it with a few new techniques and features, as well as difficulty cranked up a couple notches. They kept Hero Mode, though.
• What Measure Is a Mook?: For a series that took much joy in slicing and dicing opposing mooks, Ninja Gaiden 3 attempted to turn this into a plot point. Also, when you perform the fire-dragon Ninpo the first time, mooks around drop their weapons and stop fighting; you have the choice to coldly finish them or let them live (it happens on Normal difficulty only).