''Leather Goddesses of Phobos'' is an InteractiveFiction game written by Creator/SteveMeretzky and published by Creator/{{Infocom}} in 1986.

As the title suggests, it's a parody of sci-fi B-movies, which has you battling the eponymous Leather Goddesses as they prepare to invade Earth and enslave humanity. The packaging of the game includes several B-movie gimmicks, including a ThreeDComicBook and a scratch-and-sniff card with numbered areas to be sniffed at appropriate points in the game.

As the title might also suggest, the game contains quite a bit of sexual content; how much depended on the "Naughtiness" level, which could be set to Lewd, Suggestive, or Tame.

The game requires the player to indicate the sex of the player character at the beginning, and adjusts the other characters in the game accordingly, so that any character in whom the player character might take an... interest... is always of the opposite sex. (The exception being the Leather Goddesses, with whom female characters can make out in one scene.) It also affects the sex of the player's faithful sidekick: the male player character is assisted by the burly-but-dim Trent, while the female character is accompanied by the attractive-but-ditzy Tiffany.

A sequel, ''Leather Goddesses of Phobos 2: Gas Pump Girls Meet the Pulsating Inconvenience from Planet X!'', was released in 1992.
!!This game provides examples of:

* AdjustableCensorship: The game can be set from "Tame" to "Lewd".
* AliensInCardiff: The game opens in Upper Sandusky, Ohio.
* AttractiveBentSpecies: When the player is turned into a gorilla, the other gorilla in the cage with him/her suddenly seems a lot more good looking.
* AwesomeMcCoolname: Lane Mastodon, the hero of the included ThreeDComicBook.
* BadassNormal: Parodied with Trent/Tiffany, who wrestles alien threats on a hostile planet. Though his/her tragic demise is a Running Gag, he/she keeps returning due to toughness, persistence and bizarre luck.
* BedsheetLadder: At one point you have to make one for Trent/Tiffany to climb down.
* ClueFromEd: The bundled comic book included several referring to (non-existent) earlier issues.
* CoitusEnsues: Essentially how many of the sex scenes are kicked off.
* CoolGate: The game is dotted with black circles, which transport the player between the various locations. One of the final puzzles is to purchase a portable circle, which takes the player to the Leather Goddesses' lair.
* CopyProtection: The {{feelies}} for the game included a comic book and a map, both of which contained information vital for getting through the game. The later non-physical releases included them (and the similarly vital game manual) as additional files.
* DisasterDominoes: How the Anti-Leather Goddesses Attack Machine works.
* DisneyDeath[=/=]DeathIsCheap: Played for laughs. Your faithful sidekick would occasionally get killed in the course of trying to solve some puzzle, with you mourning their loss. They'd show up again with some ridiculous DeusExMachina explanation within a few turns.
* DoorstopBaby: Leaving a baby on the doorstep of an orphanage lets you sneak inside the opened door to loot the place.
* EverythingsBetterWithMonkeys: At one point in the game, your character gets mindswapped with a gorilla. In a cage. With an amorous gorilla of the other sex.
* {{Feelies}}: The feelies for the game included a ThreeDComicBook (with glasses), a scratch-and-sniff card, and a map.
* GoGoEnslavement: When you get captured for the first time, you wake up to find that you are dressed in skimpy slave clothing, with the brass loincloth (male) a ShoutOut (probably) to ''Film/TheRockyHorrorPictureShow'', and the brass bikini (female) a definite ShoutOut to ''Franchise/StarWars Episode VI: Film/ReturnOfTheJedi''.
* HeelRealization: [[spoiler:Disarming Thorbast/Thorbala and then returning his/her sword causes him/her to realize that he/she is the bad guy.]]
* IdiosyncraticDifficultyLevels: The Naughtiness level, although strictly speaking it didn't actually affect the difficulty of the game at all, just the details of how certain events played out.
* MacGyvering: The climax of the game revolves around MacGyvering a device out of NoodleImplements to save the day.
* ManEatingPlant: A large, mobile Venus Fly Trap is one of the hazards on... wait for it... the planet Venus.
* TheMaze: A particularly nasty one requiring you to hop, clap, or say "Kweepa" every so many moves, and pretty much impossible to navigate without the bundled map. Players found this so annoying that a later version of the game included a cheat code allowing you to skip the maze entirely.
* MoonLogicPuzzle:
** The player is captured by aliens and thrown into a cell. The way to escape is [[spoiler:simply to open the door -- it's not locked]]. Many players were stuck for weeks on this point. Lampshaded in-game as well -- the other prisoner admits he/she never thought to try it.
** On Venus, the player is captured by a Mad Scientist and turned into a gorilla in a cage. The only way to escape this is to have previously left a chocolate bar in the cage (which is never even hinted at beforehand), and then eat it as the gorilla. This sugar rush somehow gives you the strength to bend the bars and escape.
* NoodleImplements: The components of the day-saving device include: A common household blender, six feet of rubber hose, a pair of cotton balls, an eighty-two degree angle, a headlight from a 1933 Ford, a white mouse, a photo of Creator/JeanHarlow (or Creator/DouglasFairbanks), and a Cleveland phone book.
* OhNoNotAgain: After you restore Princess Theta to her normal self and get the eighty-two degree angle from her father Mitre, as soon as you leave the castle, you'll hear his reaction, implying that he has accidentally touched Theta and turned her into an angle again.
* PhallicWeapon: The Leather Goddesses' battleship, which is described as "long" and "potent-looking" with "two pendulous, brimming fuel tanks".
* PitTrap: Constructed to deal with the mobile Venus Fly Trap.
* PottyEmergency: At the very beginning, you, the FeaturelessProtagonist, get the sudden urge to use the bathroom; if you take too long, you'll pass out from PottyFailure (which may count as a PressStartToGameOver). Fortunately, you start the game in front of two bathroom doors, leaving you to choose one of the appropriate gender in order to empty your bladder. Which is a pretty weird and ridiculous way of [[PurelyAestheticGender choosing whether you (and your future sidekick) are male or female]].
* PurelyAestheticGender: Parodied in a ridiculous form of PottyEmergency, and a bit exaggerated: not only do you choose the appropriate gender in order to empty your bladder by using the toilet, but most characters get a different gender depending on the bathroom of your choice, including your sidekick of the same gender (Trent for the male character, Tiffany for female) and the royal couple (the sultan and his wife for male, the sultaness and her husband for female). The only characters whose gender remains the same are Joe, the MadScientist, King Mitre and his daughter, and the [[JustForPun titular]] Leather Goddesses of Phobos.
* RescueSex: At one point you rescue a kidnapped aristocrat; depending on what naughtiness level you're playing on, you may get an erotic encounter with your grateful rescuee.
* RiddleMeThis: Correctly answering the riddle of a sultan/ess wins you an hour with one of his/her harem.
* SchrodingersGun: The player character's sex is indeterminate for the first few moves of the game, then the player has to make a decision about whether to go to the ladies' room or the men's room. Whichever the player chooses retroactively becomes the correct answer.
* SpeakFriendAndEnter: The player is captured by aliens and thrown into a cell. The way to escape is [[spoiler:simply to open the door -- it's not locked]].
* StrappedToAnOperatingTable: At one point, the player is strapped to an exam table by a mad scientist and turned into a Gorilla. It's also possible to observe other experiments of the Leather Goddesses, but the game won't tell you what they are. Whether that is a SexyDiscretionShot or a GoryDiscretionShot is entirely up to the player's imagination.
* ThreeDComicBook: Included in the feelies.
* UnexplainedRecovery: Your faithful sidekick's running gag.