''Maken X'' is a first-person HackAndSlash game originally released in 1999 for the UsefulNotes/SegaDreamcast. It was remade for the [=PS2=], with a prespective change to third-person, and released as ''Maken Shao'' in Japan and ''Maken Shao: Demon Sword'' in Europe. Although the game shares many of the staff members and design aesthetics from ''Franchise/ShinMegamiTensei'', it is not considered part of the franchise. There is also a manga adaptation known simply as ''Maken X''.

Set in a CrapsackWorld of aggression between the United States and China, a group of scientists perfect an artificial intelligence known as "Maken," an EmpathicWeapon designed for use in psychotherapeutic treatment. Kei Sagami, a young but intelligent high-school girl, is watching the final stages of the experiment when a group of masked men attack the laboratory and kidnap her father, the head scientist of the project. In the commotion, Kei takes hold of Maken and is bound to the weapon's soul, its "Image." Having merged into one consciousness, Kei must now wield the power of Maken to save her father from a force that is threatening to control the world, running into the warring "Fukenshi" and "Hakke" clans (the "Law" and "Chaos" factions of the game, respectively) along the way.

The main gimmick of the game is the Maken's ability to "Brainjack" other characters: to overwrite their Image and effectively take control of their body. Throughout the narrative, the Maken passes from character to character, changing its shape as a weapon to suit each host, with each bodyjump bringing it one step closer to solving the mystery. With prolonged use, the Maken gains more control over each host and unlocks new attacks, eventually granting its full demonic power at 100% synchronisation. The player also earns "Image Points" by successfully defeating enemies, gaining a multiplier bonus if you defeat successive enemies without taking damage.

!Tropes used throughout the various Maken products:
* AllThereInTheManual: In ''Maken Shao'', additional information about the characters, places and terminology can be found inside of an in-game dictionary.
* AdaptationDistillation: The manga.
* {{BFS}}: Oddly enough wielded by Hakke Daru's dainty (and petrification plague infected) daughter Berlinka while brainjacked by Maken. This makes her attacks quite powerful, but slow, requiring timing to pull some of them off.
* BlindIdiotTranslation: The translators mistranslated some of the dialogues in the games so horribly that it became incomprehensible, and most of the characters' names were mangled just as badly.
* BloodierAndGorier: The manga has a lot of bloodshed, which results in an astonishing amount of blood. At one point, the pool of blood surrounding Kei is almost as large as a swimming pool... and she's still able to stand and fight, with few signs of damage.
* BloodlessCarnage: In ''Maken Shao'', no matter how many times you hit the enemy, there will never be blood. This is possibly due to the fact that the sword is said to affect the mind rather than the body.
* BlowYouAway: Fukenshi Aquinas, especially her charge attack.
* BreathWeapon: Hakke Daru's petrification-plague-spit attack.
* CastFromHP: {{Charge Attack}}s worked this way in the original Maken X. In Maken Shao they have their own separate energy bar, marked "EXTRA".
* FateWorseThanDeath: The petrification plague, which is ExactlyWhatItSaysOnTheTin. Some victims of it have been staked together, most likely by Hakke Daru, to form the enemy called "Golem", comprised of a tiny man that shoots plague-filled darts staked to the back of a giant man armed with a meat cleaver. One playable character, Hakke Daru's daughter Berlinka, has contracted the disease but seems no worse for wear aside from some bandages on her head. The player themselves can contract it from Golems and certain other enemies, but it's never permanent and goes away after a few moments.
* GrandTheftMe: The Maken takes over the bodies of those unfortunate (or fortunate?) enough to encounter it. When it uses this ability to brainjack anyone other than the main character Kei, her mind comes along for the ride as well.
* ImprobableWeaponUser: Many characters fit this trope, such as Fukenshi Li Feishan (sharp-edged metal fans), Fukenshi Aquinas (a motorized spinning extending double-helix lance), Hakke Andrey (a giant scalpel, as well as tiny knives that ''he shoots out of his tongue''), Hakke Sharja (a Maken-ized katar and four shoulder-mounted dagger-wielding robotic arms) and Hakke Daru/Dal (A Maken-ized metal stake and a syringe filled with a mysterious green substance, most likely the petrification plague).
* LethalJokeCharacter: The airliner pilot, Gou Inaba, is this in Maken Shao. Get his Synchro rate up high enough and you unlock a move that lets you call down lightning on enemies from afar and can be used endlessly with no penalty. His 100% Synchro ChargeAttack lets you call down lightning on every enemy in your field of vision.
* MultipleEndings: The game has seven different endings, depending on who you align yourself with.
* NintendoHard: Both versions of the game embody this trope.
* PermanentlyMissableContent: Hakke Andrey, if you choose to brainjack the pilot Gou Inaba during the second stage on the falling mega-airliner Rhincodon. Choosing to brainjack Inaba gets you to your planned destination, Hong Kong, but causes you to lose Andrey as he dies when the Rhincodon crashes.
* PresidentEvil: [[spoiler:Literally, with Hakke Brown, a.k.a. Hakke Billy in the Japanese release.]]
* {{Synchronization}}: In Maken Shao, every playable character has a Synchro rating that gradually goes up as you kill enemies and absorb their Image. At certain percentages (which differ for each character) you learn a new move. At 100% Synchro you gain their ChargeAttack as well as a boost to their stats, and can re-brainjack them for free (characters with less than 100% Synchro cost Image to brainjack)
* UpdatedRerelease: ''Maken Shao'', which used a third-person camera instead of the first-person camera of Maken X, added an in-game encyclopedia, added an option that shows you a list of all brainjackable characters and lets you brainjack whichever of them you want from the map screen, and introduced an upgrade system for all playable characters that granted them new moves, gave {{Charge Attack}}s to all characters (even ones that didn't have them in Maken X) once they were fully upgraded, and turned certain characters used only for utility purposes (Gou Inaba, Berlinka) into powerhouses given enough time is spent upgrading them.