'''Teenage Mutant Ninja Turtles & Other Strangeness''' is a 1985 RolePlayingGame made by Creator/PalladiumBooks revolving around the strange adventures of the [[ComicBook/TeenageMutantNinjaTurtlesMirage Teenage Mutant Ninja Turtles]], and in later books, [[BadFuture a post-apocalyptic, mutant-infested Earth]].

The players get the opportunity to play as a variety mutated animals, having the ability to chose the species, mutations and special abilities that the character would receive. Possible characters range from tiny psychic bunnies to enormous anthropomorphic crocodiles to humanoids with almost no trace of their animal species.

The game series dropped in popularity and sales once the [[WesternAnimation/TeenageMutantNinjaTurtles1987 1987 cartoon]] and [[Film/TeenageMutantNinjaTurtles live-action films]] rolled out, which made (from the publishers' words) "[[AnimationAgeGhetto the Turtles seem so childish that no self-respecting teenager, even if he thought the Turtles were cool, or thought the Ninja Turtle game was cool, was going to be caught dead playing it]]." By 2000, Palladium Books did not renew the license, because of license costs and the perception of the TMNT.

The supplement books to the core book are as follows:

Modern Series:

* ''Teenage Mutant Ninja Turtles Adventures!'': The first supplement, includes an adventure scenario and rules for integrating Super-powers from Palladium's ''Heroes Unlimited'' RPG. (June 1986)
* ''Teenage Mutant Ninja Turtles Guide to the Universe'': Revolves around outer space and aliens such as Triceratons. (May 1987)
* ''Transdimensional Teenage Mutant Ninja Turtles'': The last sourcebook to revolve around the original Turtle setting has time- and dimension-traveling adventure with mutant humans and [[EverythingsBetterWithDinosaurs dinosaurs]], among other things. (April 1989)
* ''Truckin' Turtles'': An adventure across the United States. (November 1989)
* ''Turtles Go Hollywood'': A series of inter-related adventures involving drug lords, corrupt movie executives, and evil ninja clans. ''Probably'' released to coincide with [[Film/TeenageMutantNinjaTurtles the first movie]]. (March 1990)

After the Bomb series:

* ''TabletopGame/AfterTheBomb'': An adventure that takes place in the Eastern United States that has been [[AfterTheEnd ravaged by nuclear warfare]]. (January 1986)
* ''After the Bomb: Second Edition'': More than a simple updated re-release, this edition served as a reboot of the game line. It is a complete core rulebook that replaces ''Other Strangeness'', with all Turtle references removed and changes in the backstory reflecting more modern genetics and technology. (December 2001)
* ''Road Hogs'': Takes the adventure to the West side of the US too. Notably included a tale about a senile and elderly Raphael as a martial arts master. (October 1986)[[/index]]
* ''Mutants Down Under'': Expands the adventure to Australia. (June 1988)
* ''Mutants of the Yucatan'': Expands the adventure to Mexico's Yucatán Peninsula. (July 1990)
* ''Mutants in Avalon'': Expands the adventure to Great Britain. (January 1991)
* ''Mutants in Orbit'': Expands the adventure to Outer Space. Also part of the ''TabletopGame/{{Rifts}}'' RPG series. (March 1992)

* AnimalWrongsGroup: Doctor Feral had a run in with one of these when he was younger, despite overwhelming evidence [[KarmaHoudini all charges were dropped]].
* AwesomeYetImpractical: The Animal Speech and Animal Control Psionic Abilities. The idea of a mutant animal being able to communicate and control normal animals sounds awesome, but you can only speak to and control animals of your own kind. Great if you're a common animal like a dog, cat or mouse, but if you're a mutant lion or tiger the only places your likely to find normal versions of your own kind is the zoo or a circus. It gets even more impractical if you're using an exotic animal from one of the ''TabletopGame/AfterTheBomb'' Supplements like ''Mutants Down Under'' where would a mutant [[SeldomSeenSpecies numbat]] and normal numbats in New York City?
* BearsAreBadNews: The Terror Bears, pint sized malevolent psychic ursines, are this in spades! In something of a subversion, this is not due to physical strength, but mental.
* BlueAndOrangeMorality: Doctor Victor Oban Feral is [[CharacterAlignment "Scrupulous" in alignment]] and is described as 'unfailingly polite' even to his vivisection victims. He simply does not process that uplifted animals are beings worthy of moral consideration - the game backs up this moral relativism.
* EvilutionaryBiologist: Doctor Feral...[[NightmareFuel Oh Dear Lord!]] Doctor Feral!
* ForHalloweenIAmGoingAsMyself: In the short story comic included in the Gamebook ''Don't Judge a Book'' The Turtles weren't originally aiming for this, Mikey was dressed up as a clown, Leo was dressed up as an alien, Raph dressed up like a punk rockstar and Don was dressed as [[WholesomeCrossdresser an old lady]]. However, burglars attempt to raid April's apartment and the Turtles have to fight them off. Their costumes are destroyed in the process, so they arrive to the party in nothing but their ninja accessories which (along with their PettingZooPeople looks) everyone assumes ''are'' their costumes.
* LittleBitBeastly: Mutants with 'Full Human Looks' unlike the typical anime {{Catgirl}}, these characters normally just look like really ugly humans. Someone would say "That ugly lady looks like a skunk!" instead of "That skunk [[PettingZooPeople looks like a lady!]]"
* SimpleYetAwesome: Psionic abilities like Telepathic Transmission (Great for players who don't want to spend Bio-E on speech), Hypnotic Suggestion, Mind Trap, and all forms of Bio-Manipulation are all incredibly awesome and efficient.
* SmallTaxonomyPools: Lampshaded in the book as this was done for both reasons of space and the game designer's mental health, Animals that are very similar are sometimes lumped together. For example, coyotes and wolves fall under "Wild Canines", and eagles, hawks, and falcons are all "Wild Predatory Birds", with only slight differences between them (i.e., since a coyote is smaller then a wolf, it has more Bio-E to spend).
* SuperSenses: The Super Senses one could acquire were Advanced Vision, Night Vision, Ultraviolet Light Advanced Hearing, Sonar, Advanced Smell and Advanced Touch
* WhatMeasureIsANonHuman: A human character (Doctor Feral) is considered a morally good person despite considering sentient animals to be fair game for vivisection. Mutant animals that turn on humanity in revenge for humans' actions against them (such as experimental subjects like the Terror Bears), however, are considered evil.
* TheyWouldCutYouUp/PlayingWithSyringes: Doctor Feral is probably half the reason Mutants have to have a {{Masquerade}} in the first place! Seriously, did they base half of [[WesternAnimation/TeenageMutantNinjaTurtles2003 Bishop's]] character off this guy?[[note]]Short answer: [[CaptainErsatz Probably]][[/note]]