[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/ninja_theory_logo.png]]
[[http://www.ninjatheory.com/ Ninja Theory Ltd.]] is a video game development company based in Cambridge, England.

The company was originally founded in March 2000 as Just Add Monsters, and was re-founded as Ninja Theory in November 2004, due to the collapse of its former parent company, [[Creator/ArgonautSoftware Argonaut Games Plc]], while ''VideoGame/HeavenlySword'' was under development.

Their games all share several features: extremely detailed character animation stemming from mo-cap, wildly colorful SceneryPorn (and its [[SceneryGorn grungy counterpart]]), gorgeous presentation, ActionAdventure elements, unusually high-quality writing (including lots of literary references), and women with red hair. To hear from the critical reception they typically get, the gameplay is good enough rather than excellent, there to allow the player to observe the intensely detailed animations.

Their most recent release is ''VideoGame/BleedingEdge'', a multiplayer-focused stylish team-based hack-n-slash featuring a motley crew of illegally-augmented combatants.

At [[UsefulNotes/{{Electronic Entertainment Expo}} E3 2018]], it was announced that Ninja Theory was acquired by Microsoft, making it a member of the Creator/XboxGameStudios family.
----
[[index]]
!!Video game developed as Just Add Monsters:
* ''VideoGame/KungFuChaos''

!!Video games developed as Ninja Theory:
* ''VideoGame/HeavenlySword''
* ''VideoGame/EnslavedOdysseyToTheWest''
* ''VideoGame/DmcDevilMayCry''
* ''VideoGame/DisneyInfinity: Marvel Super Heroes''
* ''VideoGame/HellbladeSenuasSacrifice'' (self-published)
* ''VideoGame/BleedingEdge''
* ''VideoGame/SenuasSagaHellbladeII''
[[/index]]
----